| Patents for John A. Robbins |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 296,658 | Apr. 08, 1884 | J. Weathers | Combined anvil, vise, and drill | combined anvil vises and drills |
| CA-30,032 | Oct. 22, 1888 | J.A. Robbins | Combined anvil, vise and drill | anvil vises |
| 429,961 | Jun. 10, 1890 | J.A. Robbins | Watch makers bow bender | watchmaker |
| 529,962 | Nov. 27, 1894 | C.A. Salzman | Combination-tool | blacksmith |
| 574,764 | Jan. 05, 1897 | C.A. Salzman | Combination Tool | combination tools |
| CA-56,992 | Aug. 11, 1897 | C.A. Salzman, J.A. Robbins | Combination tool | blacksmith |
| 653,317 | Jul. 10, 1900 | C.A. Salzman | Convertable Apparatus | combination tools |
