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| Patents for Julius J. Cowell | |||||
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| Number | Date | Patentee | Title | Type | |
| 409,455 | Aug. 20, 1889 | J.J. Cowell | Miter machine | miter boxes | |
| 488,600 | Dec. 27, 1892 | J.J. Cowell | Vise | vises | |
| 691,448 | Jan. 21, 1902 | J.J. Cowell | Shaft-coupling | industrial machine shaft couplings | |