Library Hours
Monday to Friday: 9 a.m. to 9 p.m.
Saturday: 9 a.m. to 5 p.m.
Sunday: 1 p.m. to 9 p.m.
Naper Blvd. 1 p.m. to 5 p.m.

LEADER 00000cz   2200000n  4500 
001    n  79076648  
003    DLC 
005    19970325120016.3 
008    790910n| acannaab|          |a ana |||   
010    n  79076648 
040    DLC|cDLC|dDGPO|dDLC-S|dDGPO|dDLC 
110 1  United States.|bPatent and Trademark Office 
410 1  United States.|bPatent & Trademark Office 
410 1  United States.|bDept. of Commerce.|bPatent and Trademark 
       Office 
410 2  U.S. Patent and Trademark Office 
410 2  U.S. Patent & Trademark Office 
410 1  United States.|bAssistant Secretary of Commerce and 
       Commissioner of Patents and Trademarks 
410 2  USPTO 
410 2  PTO 
510 1  |wa|aUnited States.|bPatent Office 
670    Its Official gazette ... Feb. 11, 1975- 
670    A Career with the Patent & Trademark Office, 1992?:|bt.p. 
670    Project XL (U.S.). Inventive thinking resource directory 
       [MI] 1989:|bt.p. (Department of Commerce, U.S. Patent and 
       Trademark Office) 
670    Index to the U.S. patent classification system, Dec. 1993:
       |bt.p. (U.S. Department of Commerce, U.S. Patent and 
       Trademark Office; Assistant Secretary and Commissioner of 
       Patents and Trademarks) 
670    Phone call to Patent and Trademark Commissioner's office, 
       7/6/94|b(office is both an Assistant Secretary of Commerce
       unit and the Patent and Trademark Commissioner's office) 
670    Its Commissioner of Patents and Trademarks annual report 
       [MI] fiscal year '93:|bt.p. (Assistant Secretary of 
       Commerce and Commissioner of Patents and Trademarks) t.p. 
       verso (U.S. Department of Commerce, U.S. Patent and 
       Trademark Office) p. 1 (USPTO) 
670    Working for our customers, fiscal year 1994:|bt.p. (U.S> 
       Patent and trademark Office) p. 1 (PTO) 
670    USAPat, facsimile images of United States patents [CF] 
       1996?:|bcontainer (U.S. Patent & Trademark Office)