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CLASS 172 EARTH WORKING... PATENT CLASSIFICATION DEFINITIONS... U.S. DEPT. OF COMMERCE - PATENT AND TRADEMARK OFFICE... JUNE 1998
Class 172 Earth Working... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996
Author: United States. Patent and Trademark Office
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Languages : en
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Publisher:
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Class 172 Earth Working Patent Classification Definitions U.S. Dept. Of Commerce December 1998
Class 176 - Boring Or Penetrating The Earth, Patent Classification Definitions, U.S. Dept. Of Commerce - Patent And Trademark Office, June 2000
CLASS 248 SUPPORTS... PATENT CLASSIFICATION DEFINITIONS... U.S. DEPT. OF COMMERCE - PATENT AND TRADEMARK OFFICE... JUNE 1998
Class 176 - Boring Or Penetrating the Earth, Patent Classification Definitions, Patent & Trademark Office, U.S. Dept. of Commerce, December 1999
Author: United States. Patent and Trademark Office
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Languages : en
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Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description