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| Patents for John A. Robbins | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 296,658 | Apr. 08, 1884 | J. Weathers | Combined anvil, vise, and drill | |
 | CA-30,032 | Oct. 22, 1888 | J.A. Robbins | Combined anvil, vise and drill | |
 | 429,961 | Jun. 10, 1890 | J.A. Robbins | Watch makers bow bender | |
 | 529,962 | Nov. 27, 1894 | C.A. Salzman | Combination-tool | |
 | 574,764 | Jan. 05, 1897 | C.A. Salzman | Combination Tool | |
 | CA-56,992 | Aug. 11, 1897 | C.A. Salzman, J.A. Robbins | Combination tool | |
 | 653,317 | Jul. 10, 1900 | C.A. Salzman | Convertable Apparatus | |