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 in various formats from the U.S. Patent and Trademark Office. Many PTDLs have on file all full-text patents issued since 1790, trademarks published since 1872, and select collections of foreign patents. All PTDLs have both the patent and trademark sections of the Official Gazette of the U.S. Patent and Trademark Office. The full-text utility and design patents are distributed numerically on 16 mm microfilm, and plant patents on color microfiche. Patent and trademark search systems on CD-ROM (Compact Disc-Read Only) format are available at all PTDLs to increase utilization of and enhance access to the information found in patents and trademarks. It is through the CD-ROM systems that preliminary patent and trademark searches can be conducted through the numerically arranged collections. All information is available for use by the public free of charge. In addition, 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. Facilities for making paper copies of patent and trademark information are generally provided for a fee. 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 inconvenience. State Name of Library Telephone Contact Alabama Auburn University Libraries (334) 844-1747 Birmingham Public Library (205) 226-3620 Alaska Anchorage: Z.J. Loussac Public Library (907) 562-7323 Arizona Tempe: Noble Library, Arizona State University (602) 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) 640-6249 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 (305) 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 (317) 494-2872 Iowa Des Moines: State Library of Iowa (515) 281-4118 Kansas Wichita: Ablah Library, Wichita State University (316) 689-3155 Kentucky Louisville Free Public Library (502) 574-1611 Louisiana Baton Rouge: Troy H. Middleton Library, Louisiana State University (504) 388-2570 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 Ext. 265 Michigan Ann Arbor: Media Union Library, University of Michigan (313) 647-5735 Big Rapids: Abigail S. Timme Library, Ferris State University (616) 592-3602 Detroit: Great Lakes Patent and (313) 833-3379 Trademark Center Minnesota Minneapolis Public Library and Information Center (612) 372-6570 Mississippi Jackson: Mississippi Library Commission (601) 359-1036 Missouri Kansas City: Linda Hall Library (816) 363-4600 St. Louis Public Library (314) 241-2288 Ext. 390 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 Reno: University of Nevada, Reno Library (702) 784-6500 Ext. 257 New Hampshire Concord: New Hampshire State Library (603) 271-2239 New Jersey Newark Public Library (201) 733-7782 Piscataway: Library of Science and Medicine, Rutgers University (908) 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 New York Public Library (The Research Libraries) (212) 592-7000 North Carolina Raleigh: D.H. Hill Library, North Carolina State University (919) 515-3280 North Dakota Grand Forks: Chester Fritz Library, University of North Dakota (701) 777-4888 Ohio Akron - Summit County Public (303) 643-9075 Library Cincinnati and Hamilton County, Public Library of (513) 369-6936 Cleveland Public Library (216) 623-2870 Columbus: Ohio State University Libraries (614) 292-6175 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) 865-4861 Puerto Rico Mayaquez General Library, University of Puerto Rico (787) 832-4040 Ext. 3459 Rhode Island Providence Public Library (401) 455-8027 South Carolina Clemson University Libraries (803) 656-3024 South Dakota Rapid City: Devereaux Library, South Dakota School of Mines and Technology (605) 394-6822 Tennessee Memphis & Shelby County Public Library and Information Center (901) 725-8877 Nashville: Stevenson Science Library, Vanderbilt University (615) 322-2775 Texas Austin: McKinney Engineering Library, University of Texas at Austin (512) 495-4500 College Station: Sterling C. Evans Library, Texas A & M University (409) 845-3826 Dallas Public Library (214) 670-1468 Houston: The Fondren Library, Rice University (713) 527-8101 Ext. 2587 Lubbock: Texas Tech University Not Yet Operational Utah Salt Lake City: Marriott Library, University of Utah (801) 581-8394 Vermont Burlington: Bailey/Howe Library, University of Vermont Not Yet Operational 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) 293-2510 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