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Additional Physical Format: | Online version: United States. Patent Office. ... Manual of classification of patents ... January 1, 1940. Washington, U.S. Govt. Print. Off., 1940 (OCoLC)777343712 |
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Material Type: | Government publication, National government publication |
Document Type: | Book |
All Authors / Contributors: | United States. Patent Office. |
OCLC Number: | 12413845 |
Notes: | At head of title: Department of commerce. United States Patent Office. Loose-leaf. ---- ... Index to classification of patents to accompany the Manual of classification of patents, revised to January 1, 1940 ... Washington, U.S. Govt. print. off., 1940. 1 v. 15x24 cm. At head of title: Department of commerce. United States Patent office. |
Description: | 1 volume 15 x 24 cm |
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