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| Patents for Holt Manufacturing Co. (Cleveland) | |||||
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| Number | Date | Patentee | Title | Type | |
| 394,857 | Dec. 18, 1888 | J.P. Holt | Anvil and vise attachment | anvil vises | |
| CA-31,850 | Aug. 01, 1889 | J.P. Holt | Combined anvil and vise | anvil vises | |