Concordance, United States patent classification to international patent classification
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| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
[Washington, D.C.] :
U.S. Dept. of Commerce, Patent and Trademark Office, Patent Documentation Organizations,
1990
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| Edition: | 1990 ed |
| Subjects: | |
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Government Documents
| Call Number: |
GOVDOCS C 21.14/2:C 74/990
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| • | Available |