Concordance, United States patent classification to international patent classification

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Bibliographic Details
Corporate Author: United States. Patent Documentation Organizations
Format: Book
Language:English
Published: [Washington, D.C.] : U.S. Dept. of Commerce, Patent and Trademark Office, Patent Documentation Organizations, 1990
Edition:1990 ed
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Description
Item Description:Cover title: United States patent classification to international patent classification
Shipping list no.: 90-290-P
S/N 003-004-00643-9
Item 254-A
Physical Description:184 p. ; 28 cm