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Patent classification definitions
Title
Patent classification definitions [microform] / U.S. Patent and Trademark Office, Documentation Organizations.
Edition
1990 rev. updated ed.
Published
Washington, D.C. : The Office, 1991.
Physical Description
377 packets.
Notes
Accompanied by list "Updated set complete as of December 1990."
Revisions and addenda issued as needed.
Distributed to depository libraries in microfiche.
Microfiche. [Washington, D.C. : Patent and Trademark Office, 1991] 408 microfiches.
Format
Books / Microforms
Language
English
Added to Catalog
June 01, 2002
Subjects
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