Index to the U.S. patent classification system.
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Imprint: | [Washington, D.C.] : U.S. Dept. of Commerce, Patent and Trademark Office : [Supt. of Docs., U.S. G.P.O., distributor, |
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Description: | v. ; 28 cm. |
Language: | English |
Subject: | |
Format: | U.S. Federal Government Document Print Journal |
Local Note: | Law; Sci, Last v. SciRef. |
URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/2363631 |