Patent & Trademark Depository Libraries (PTDLs)
These libraries throughout the country provide public access to U.S. patent databases, full patents, weekly Gazettes, patent classifications, and other patent and trademark reference sources.
1. Reference Services
New York State Library
Cultural Education Center
Albany, NY 12230
518 474-5355
2. University of New Mexico General Library
The University of New Mexico
Albuquerque, NM 87131-1466
505 277-4412
3. Physical Sciences Library
Graduate Research Center
University of Massachusetts
Amherst, MA 01003
413 545-1370
4. Anchorage Municipal Libraries
Z. J. Loussac Public Library
3600 Denali Street
Anchorage, AK 99503-6093
907 562-7323
5. Engineering Library
1100 Dow
The University of Michigan
Ann Arbor, MI 48109-2136
313 764-5298
6. Technical Resources
Price Gilbert Memorial Library
Georgia Institute of Technology
Atlanta, GA 30332-0900
404 894-4508
7. Science and Technology Department
Auburn University Libraries
Auburn University, AL 36849-5606
205 844-1747
8. McKinney Engineering Library
ECJ 1.300
The University of Texas at Austin
Austin, TX 78713
512 495-4500
9. Middleton Reference Services
Troy H. Middleton Library
Louisiana State University
53 Middleton Library
Baton Rouge, LA 70803
504 388-2570
10. Ferris State University
Abigail S. Timme Library
1201 S. State Street
Big Rapids, MI 49307-2747
616 592-3602
11. Government Documents Department
Birmingham Public Library
2100 Park Place
Birmingham, AL 35203
205 226-3680
12. Boston Public Library
P.O. Box 286
Boston, MA 02117
617 536-5400, Ext. 265
13. Science and Technology Department
Buffalo and Erie County Public Library
Lafayette Square
Buffalo, NY 14203
716 858-7101
14. Patent Center
Montana College of Mineral Science
and Technology Library
1300 West Park Street
Butte, MT 59701
406 496-4281
15. Natrona County Public Library
307 E. Second Street
Casper, WY 82601-2598
307 237-4935
16. Medical University of
South Carolina Library
171 Ashley Avenue
Charleston, SC 29425
803 792-2372
17. Science and Technology Information Center
Business/Science/Technology Division
Chicago Public Library
400 South State Street, 3S-12
Chicago, IL 60605
312 747-4450
18. Science and Technology Department
The Public Library of Cincinnati
and Hamilton County
800 Vine Street
Cincinnati, OH 45202-2071
513 369-6936
19. Reference Unit
R. M. Cooper Library
Clemson University
Box 343001
Clemson, SC 29634-3001
803 656-3024
20. Government Documents Department
Cleveland Public Library
325 Superior Avenue
Cleveland, OH 44114-1271
216 623-2870
21. Reference Services
Engineering and Physical
Sciences Library
University of Maryland
College Park, MD 20742
301 405-9157
22. Evans Library - Room 201-A
Texas A&M University
College Station, TX 77843-5000
409 845-3826
23. Information Services Department
Ohio State University Libraries
1858 Neil Avenue Mall
Columbus, OH 43210
614 292-6175
24. Dallas Public Library
1515 Young Street
Dallas, TX 75201
214 670-1468
25. Business, Science and Government
Publications Department
Denver Public Library
1357 Broadway
Denver, CO 80203
303 640-8847
26. Information Services and
Patent Depository
State Library of Iowa
East 12th & Grand
Des Moines, IA 50319
515 281-4118
27. Technology and Science Department
Detroit Public Library
5201 Woodward Avenue
Detroit, MI 48202
313 833-1450
28. Patent Collection
The University Library
University of New Hampshire
18 Library Way
Durham, NH 03824
603 862-1777
29. Government Documents Department
Broward County Main Library
100 S. Andrews Avenue
Fort Lauderdale, FL 33301
305 357-7444
30. Chester Fritz Library
University of North Dakota
P.O. Box 9000
Grand Forks, ND 58202
701 777-4888
31. Federal Documents Section
Hawaii State Library
478 South King Street
Honolulu, HI 96813
808 586-3477
32. Division of Government Publications
and Special Resources
The Fondren Library
Rice University
P.O. Box 1892
Houston, TX 77251-1892
713 527-8101, Ext. 2587
33. Business, Science and Technology Division
Indianapolis-Marion County Public Library
P.O. Box 211
Indianapolis, IN 46206
317 269-1741
34. Mississippi Library Commission
Post Office Box 10700
Jackson, MS 39289-0700
601 359-1036
35. Linda Hall Library
5109 Cherry Street
Kansas City, MO 64110
816 363-4600
36. Engineering Library
Nebraska Hall, 2nd Floor West
University of Nebraska--Lincoln
Lincoln, NE 68588-0516
402 472-3411
37. Arkansas State Library
One Capitol Mall
Little Rock, AR 72201-1081
501 682-2053
38. Science, Technology and Patents Department
Los Angeles Public Library
630 West Fifth Street
Los Angeles, CA 90071-2097
213 228-7220
39. Reference and Adult Services
Louisville Free Public Library
301 York Street
Louisville, KY 40203-2257
502 574-1611
40. Kurt F. Wendt Library
University of Wisconsin-Madison
215 North Randall Avenue
Madison, WI 53706
608 262-6845
41. Business/Science Department
Memphis & Shelby County Public
Library and Information Center
1850 Peabody Avenue
Memphis, TN 38104-4025
901 725-8877
42. Business and Science Department
Miami-Dade Public Library
101 West Flagler Street
Miami, FL 33130-2585
305 375-2665
43. Milwaukee Public Library
814 West Wisconsin Avenue
Milwaukee, WI 53233
414 286-3247
44. Technology and Science/
Government Documents Department
Minneapolis Public Library
and Information Center
300 Nicollet Mall
Minneapolis, MN 55401
612 372-6570
45. Evansdale Library
West Virginia University
P.O. Box 6105
Morgantown, WV 26506-6105
304 293-2510
46. University of Idaho Library
Moscow, ID 83844-2361
208 885-6235
47. Stevenson Science Library
Vanderbilt University
419-21st Avenue South
Nashville, TN 37240-0007
615 322-2775
48. Patent Library
Science Park
5 Science Park
New Haven, CT 06511
203 786-5447
49. SIBL/Science, Room 120
New York Public Library
Fifth Avenue and 42nd Street
New York, NY 10018
212 930-0917
50. Reference Department
University of Delaware Library
Newark, DE 19717-5267
302 831-2965
51. Social Sciences, Sciences, and
U.S. Government Publications
Division
Newark Public Library
P.O. Box 630, 5 Washington Street
Newark, NJ 07101
201 733-7782
52. Reference Department
Library
P.O. Box 25,000
University of Central Florida
Orlando, FL 32816-0666
407 823-2562
53. Science and Engineering Center
Raymond H. Fogler Library
University of Maine
Orono, ME 04469
207 581-1691
54. Government Publications Department
The Free Library of Philadelphia
1901 Vine Street
Philadelphia, PA 19103-1189
215 686-5331
55. Government Documents Department
Library of Science and Medicine
Rutgers University
P.O. Box 1029
Piscataway, NJ 08855-1029
908 932-2895
56. Science & Technology Department
The Carnegie Library of Pittsburgh
4400 Forbes Avenue
Pittsburgh, PA 15213-4080
412 622-3138
57. Providence Public Library
225 Washington Street
Providence, RI 02903
401 455-8027
58. Documents Department
D. H. Hill Library
North Carolina State University
Box 7111
Raleigh, NC 27695-7111
919 515-3280
59. Devereaux Library
South Dakota School of Mines
and Technology
501 E. Saint Joseph Street
Rapid City, SD 57701-3995
605 394-2418
60. Government Publications Department
University Library
University of Nevada, Reno
Reno, NV 89557-0044
702 784-6579
61. Virginia Commonwealth University
Box 2033 - 901 Park Avenue
Richmond, VA 23284-2033
804 367-1104
62. Government Publications Section
California State Library
Library-Courts Building
P.O. Box 942837
Sacramento, CA 94237-0001
916 654-0069
63. Business, Science & Technology Dept.
St. Louis Public Library
1301 Olive Street
St. Louis, MO 63103
314 241-2288, Ext. 390
65. Marriott Library
University of Utah
Salt Lake City, UT 84112
801 581-8394
66. Science Section
San Diego Public Library
820 E Street
San Diego, CA 92101
619 236-5813
67. San Francisco Public Library
Civic Center
San Francisco, CA 94102
415 557-4488
68. Engineering Library, FH-15
University of Washington
Seattle, WA 98195
206 543-0740
69. Patent and Trademark Depository Library
Illinois State Library
300 South 2nd Street
Springfield, IL 62701-1796
217 782-5659
70. Patent & Trademark Library
CITD 206
Stillwater, OK 74078-0390
405 744-7086
71. Sunnyvale Patent Clearinghouse
1500 Partridge Avenue
Building 7
Sunnyvale, CA 94087
408 730-7290
72. Patent Library
Library LIB122
University of South Florida
4202 E. Fowler Avenue
Tampa, FL 33620-5400
813 974-2726
73. Noble Science and Engineering Library
Arizona State University
Tempe, AZ 85287-1006
602 965-7010
74. Science-Technology Department
Toledo/Lucas County Public Library
325 Michigan Street
Toledo, OH 43624
419 259-5212
75. Documents Section
C207 Pattee Library
Pennsylvania State University
Libraries
University Park, PA 16802
814 865-4861
76. Howard University Libraries
500 Howard Place, N.W.
Washington, DC 20059
202 806-7252
77. Siegesmund Engineering Library
Potter Center
Purdue University
West Lafayette, IN 47907-1250
317 494-2873
78. Ablah Library
Campus Box 68
Wichita State University
Wichita, KS 67260-0068
316 689-3155