Alabama
Ralph Brown Draughon Library, Auburn 334-844-1737
Birmingham Public Library, Birmingham 205-226-3620
Alaska
Mather Library, University of Alaska, Fairbanks 907-474-2636
Arkansas
Arkansas State Library, Little Rock 501-682-2053
California
Los Angeles Public Library, Los Angeles 213-228-7220
Orbach Science Library, University of California, Riverside 951-827-3316
California State Library, Courts Building, Sacramento 916-654-0069
San Diego Public Library, San Diego 619-236-5813
San Francisco Public Library, San Francisco 415-557-4500
Sunnyvale Public Library, Sunnyvale 408-730-7300
Colorado
Central Denver Public Library, Denver 720-865-1711
Connecticut
Ryan-Matura Library, Sacred Heart University, Fairfield 203-371-7726
Delaware
University of Delaware Library, Newark 302-831-2965
District of Columbia
Founders Library, Howard University, Washington D.C. 202-806-7252
Florida
Broward County Main Library, Fort Lauderdale 954-357-7444
Miami-Dade Public Library, Miami 305-375-2665
University of Central Florida Libraries, Orlando 407-823-2562
Georgia
Georgia Institute of Technology, Atlanta 404-385-7185
Hawaii
Hawaii State Library, Honolulu 808-586-3477
Illinois
Chicago Public Library, Chicago 312-747-4450
Indiana
Indianapolis-Marion County Public Library, Indianapolis 317-275-4100
Siegesmund Engineering Library, Purdue, West Lafayette 765-494-2872
Kansas
Ablah Library, Wichita State University, Wichita 800-572-8368
Kentucky
Louisville Free Public Library, Louisville 502-574-1611
Louisiana
Troy H. Middleton Library, Louisiana State University, Baton Rouge 225-578-8875
Maine
Raymond H. Fogler Library, University of Maine, Orono 207-581-1678
Maryland
University of Baltimore Law Library, Baltimore 410-837-4554
Massachusetts
Physical Sciences Library, University of Massachusetts, Amherst 413-545-2765
Boston Public Library, Boston 617-536-5400
Michigan
Engineering Library, University of Michigan, Ann Arbor 734-647-5735
Ferris State University Library, Big Rapids 231-591-3602
Detroit Public Library, Detroit 313-481-1391
Minnesota
Hennepin County Library, Minneapolis 952-847-8000
Mississippi
Mississippi Library Commission, Jackson 601-432-4111
Missouri
Linda Hall Library, Kansas City 816-363-4600
St. Louis Public Library, St. Louis 314 241-2288
Montana
Montana Tech Library, University of Montana, Butte 406-496-4281
Nebraska
Engineering Library, University of Nebraska, Lincoln 402-472-3411
Nevada
Clark County Library District, Las Vegas 702-507-3421
University of Nevada, Reno 775-682-5593
New Jersey
Newark Public Library, Newark 973-733-7779
Library of Science and Medicine, Rutgers University, Piscataway 732-445-2895
New Mexico
University of New Mexico General Library, Albuquerque 505-277-4412
New York
New York State Library, Albany 518-474-5355
Buffalo and Erie County Public Library, Buffalo 716-858-8900
New York Science, Industry and Business Library, New York 212-592-7000
Central Library of Rochester and Monroe County, Rochester 585-428-8110
Science and Engineering Library, Stony Brook 631-632-7148
North Carolina
University of North Carolina, Charlotte 704-687-2241
D.H. Hill Library, North Carolina State University, Raleigh 919-515-2935
North Dakota
Chester Fritz Library, University of North Dakota, Grand Forks 701-777-4888
Ohio
Akron-Summit County Public Library, Akron 330-643-9075
The Public Library of Cincinnati 513-369-6932
Cleveland Public Library, Cleveland 216-623-2870
Wright State University, Dayton 937-775-3521
Toledo/Lucas County Business and Technology Library, Toledo 419-259-5209
Oklahoma
Oklahoma State University, Stillwater 405-744-7086
Oregon
Lewis & Clark College Law School, Portland 503-768-6786
Pennsylvania
The Free Library of Philadelphia, Philadelphia 215-686-5394
The Carnegie Library of Pittsburgh, Pittsburgh 412-622-3138
Pennsylvania State University, University Park 814-865-7617
Puerto Rico
Learning Resource Center, University of Puerto Rico, Bayamón 787-993-0000
General Library, University of Puerto Rico, Mayagüez 787-832-4040
Rhode Island
Providence Public Library, Providence 401-455-8027
South Carolina
R. M. Cooper Library, Clemson University, Clemson 864-656-3024
South Dakota
Devereaux Library, SD School of Mines and Technology, Rapid City 605-394-1275
Tennessee
Stevenson Science and Engineering Library, Vanderbilt Univ., Nashville 615-322-2717
Texas
McKinney Engineering Library, University of Texas, Austin 512-495-4511
Texas A&M University, West Campus Library, College Station 979-845-2111
Dallas Public Library, Dallas 214-670-1468
Fondren Library, Rice University, Houston 713-348-5483
Texas Tech University Library, Lubbock 806-742-2282
San Antonio Public Library, San Antonio 210-207-2500
Utah
Marriott Library, University of Utah, Salt Lake City 801-581-8394
Vermont
Bailey/Howe Library, University of Vermont, Burlington 802-656-2542
Washington
Engineering Library, University of Washington, Seattle 206-543-0740
West Virginia
Evansdale Library, West Virginia University, Morgantown 304-293-4695
Wisconsin
Kurt F. Wendt Library, University of Wisconsin, Madison 608-262-6845
Milwaukee Public Library, Milwaukee 414-286-3051
Wyoming
Wyoming State Library, Cheyenne 307-777-7281
For an online list of U.S. patent depositories go to: http://www.uspto.gov/go/ptdl/ptdlib_1.html
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