Reference Collections of U.S. Patents and Trademarks
     Available for Public Use in Patent and Trademark Depository Libraries

The following libraries, designated as Patent and Trademark Depository
Libraries (PTDLs), receive patent and trademark information from the U.S.
Patent and Trademark Office.  Many PTDLs have on file patents issued since
1790, trademarks published since 1872, and select collections of foreign
patents.  All PTDLs receive both the patent and trademark sections of the
Official Gazette of the U.S. Patent and Trademark Office and numerical
sets of patents in a variety of formats. Patent and trademark search
systems in the Cassis CD-ROM series are available at all PTDLs to increase
access to that information.  It is through the CD-ROM systems and other
depository materials that preliminary patent and trademark searches may be
conducted through the numerically arranged collections.

Each PTDL offers reference publications which outline and provide access
to the patent and trademark classification systems, as well as other
documents and publications which supplement the basic search tools.
PTDLs provide technical staff assistance in using all materials.

All information is available for use by the public free of charge.
However, there may be charges associated with the use of on-line
systems, photocopying and related services.

Since there are variations in the scope of patent and trademark
collections among the PTDLs, and their hours of service to the public
vary, anyone contemplating use of these collections at a particular
library is urged to contact that library in advance about its
collections, services, and hours in order to avert possible

Partnership PTDLs provide enhanced and expanded services for which
fees are charged. They offer on-line patent text and image searching,
on-line trademark searching, and videoconferencing for examiner
interviews and workshops. They accept disclosure documents on site,
order file wrappers, assignment documents and certified copies for their
customers, and host a variety of seminars aimed at specific audiences,
including practitioners, paralegals, and independent inventors.
Currently, partnerships are located at the Great Lakes Patent and
Trademark Center (GLPTC) at the Detroit Public Library in Detroit,
Michigan, the Sunnyvale Center for Innovation, Invention and Ideas
(SCI3) at the Sunnyvale Public Library in Sunnyvale, California and
at the South Central Intellectual Property Partnership at Rice
(SCIPPR) at the Fondren Library of Rice University in Houston, Texas.

State                Name of Library                      Telephone Contact

Alabama              Auburn University Libraries             (334) 844-1737
                     Birmingham Public Library               (205) 226-3620
Alaska               Anchorage: Z. J. Loussac Public
                     Library                                                    (907) 562-7323
Arizona              Tempe: Noble Library, Arizona
                     State University                        (480) 965-7010
Arkansas             Little Rock: Arkansas State
                     Library                                                    (501) 682-2053
California           Los Angeles Public Library              (213) 228-7220
                     Sacramento: California State
                     Library                                                            (916) 654-0069
                     San Diego Public Library                (619) 236-5813
                     San Francisco Public Library            (415) 557-4500
                     Sunnyvale Center for Innovation,
                     Invention and Ideas                     (408) 730-7290
Colorado             Denver Public Library                   (303) 640-6220
Connecticut          Hartford Public Library                 (860) 543-8628
                     New Haven Free Public Library           (203) 946-8130
Delaware             Newark: University of Delaware
                     Library                                                    (302) 831-2965
Dist. of Columbia    Washington: Howard University
                     Libraries                                                  (202) 806-7252
Florida              Fort Lauderdale: Broward County
                     Main Library                            (954) 357-7444
                     Miami-Dade Public Library               (305) 375-2665
                     Orlando: University of Central
                     Florida Libraries                                          (407) 823-2562
                     Tampa Campus Library, University
                     of South Florida                        (813) 974-2726
Georgia              Atlanta: Price Gilbert Memorial
                     Library, Georgia Institute
                     of Technology                           (404) 894-4508
Hawaii               Honolulu: Hawaii State Public
                     Library System                                             (808) 586-3477
Idaho                Moscow: University of Idaho Library     (208) 885-6235
Illinois             Chicago Public Library                  (312) 747-4450
                     Springfield: Illinois State Library     (217) 782-5659
Indiana              Indianapolis-Marion County Public
                     Library                                                    (317) 269-1741
                     West Lafayette Siegesmund
                     Engineering Library,
                     Purdue University                       (765) 494-2872
Iowa                 Des Moines: State Library of Iowa       (515) 242-6541
Kansas               Wichita: Ablah Library, Wichita
                     State University                        (316) 978-3155
Kentucky             Louisville Free Public Library          (502) 574-1611
Louisiana            Baton Rouge: Troy H. Middleton
                     Library, Louisiana State University     (225) 388-8875
Maine                Orono: Raymond H. Fogler Library,
                     University of Maine                                        (207) 581-1678
Maryland             College Park: Engineering and
                     Physical Sciences Library,
                     University of Maryland                  (301) 405-9157
Massachusetts        Amherst: Physical Sciences Library,
                     University of Massachusetts             (413) 545-1370
                     Boston Public Library                   (617) 536-5400
Michigan             Ann Arbor: Media Union Library,
                     University of Michigan                  (734) 647-5735
                     Big Rapids: Abigail S. Timme
                     Library, Ferris State University        (231) 592-3602
                     Detroit: Great Lakes Patent and         (313) 833-3379
                     Trademark Center
Minnesota            Minneapolis Public Library and
                     Information Center                      (612) 630-6120
Mississippi          Jackson: Mississippi Library
                     Commission                                                         (601) 961-4111
Missouri             Kansas City: Linda Hall Library         (816) 363-4600
                     St. Louis Public Library                (314) 241-2288
Montana              Butte: Montana College of Mineral
                     Science and Technology Library          (406) 496-4281
Nebraska             Lincoln: Engineering Library,
                     University of Nebraska-Lincoln          (402) 472-3411
Nevada               Las Vegas-Clark County Library
                     District                                (702) 733-1165
                     Reno: University of Nevada, Reno
                     Library                                                    (775) 784-6500
New Hampshire        Concord: New Hampshire
                     State Library                           (603) 271-2239
New Jersey           Newark Public Library                   (973) 733-7779
                     Piscataway: Library of Science and
                     Medicine, Rutgers University            (732) 445-2895
New Mexico           Albuquerque: University of
                     New Mexico General Library              (505) 277-4412
New York             Albany: New York State Library          (518) 474-5355
                     Buffalo and Erie County Public
                     Library                                                    (716) 858-7101
                     Rochester Public Library                (716) 428-8110
                     New York  Library
                     (The Research Libraries)                (212) 592-7000
                     Stony Brook: Engineering Library,
                     State University of New York            (631) 632-7148
North Carolina       Raleigh: D.H. Hill Library, North
                     Carolina State University               (919) 515-2935
North Dakota         Grand Forks: Chester Fritz Library,
                     University of North Dakota              (701) 777-4888
Ohio                 Akron-Summit County Public              (330) 643-9075
                     Cincinnati and Hamilton County,
                     Public Library of                       (513) 369-6971
                     Cleveland Public Library                (216) 623-2870
                     Columbus: Ohio State University
                     Libraries                               (614) 292-3022
                     Dayton: Paul Laurence Public
                     Library, Wright State
                     University                         Not Yet Operational
                     Toledo/Lucas County Public Library      (419) 259-5212
Oklahoma             Stillwater: Oklahoma State
                     University Center for International
                     Trade Development                                          (405) 744-7086
Oregon               Portland: Paul L. Boley Law Library,
                     Lewis & Clark College                   (503) 768-6786
Pennsylvania         Philadelphia, The Free Library of       (215) 686-5331
                     Pittsburgh, Carnegie Library of         (412) 622-3138
                     University Park: Pattee Library,
                     Pennsylvania State University           (814) 865-6369
Puerto Rico          Mayaquez General Library,
                     University of Puerto Rico               (787) 832-4040
                     Bayamon, Learning Resources Center,
                     University of Puerto Rico          Not Yet Operational
Rhode Island         Providence Public Library               (401) 455-8027
South Carolina       Clemson University Libraries            (864) 656-3024
South Dakota         Rapid City: Devereaux Library,
                     South Dakota School of Mines and
                     Technology                                                 (605) 394-1275
Tennessee            Memphis & Shelby County Public
                     Library and Information Center          (901) 725-8877
                     Nashville: Stevenson Science
                     Library, Vanderbilt University          (615) 322-2717
Texas                Austin: McKinney Engineering
                     Library, University of Texas at
                     Austin                                                             (512) 495-4500
                     College Station: Sterling
                     C. Evans Library, Texas A & M
                     University                                                 (979) 845-5745
                     Dallas Public Library                   (214) 670-1468
                     Houston: The Fondren Library, Rice
                     University                                                 (713) 348-5483
                     Lubbock: Texas Tech University          (806) 742-2282
                     San Antonio Public Library         Not Yet Operational
Utah                 Salt Lake City: Marriott Library,
                     University of Utah                      (801) 581-8394
Vermont              Burlington: Bailey/Howe Library,
                     University of Vermont                   (802) 656-2542
Virginia             Richmond: James Branch Cabell
                     Library, Virginia Commonwealth
                     University                              (804) 828-1104
Washington           Seattle: Engineering Library,
                     University of Washington                (206) 543-0740
West Virginia        Morgantown: Evansdale Library,
                     West Virginia University                (304) 293-4695
Wisconsin            Madison: Kurt F. Wendt Library,
                     University of Wisconsin Madison         (608) 262-6845
                     Milwaukee Public Library                (414) 286-3051
Wyoming              Casper: Natrona County Public
                     Library                                                            (307) 237-4935