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| Patents for Z. C. Robbins | |||||
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| Number | Date | Patentee | Title | Type | |
| RE629 | Nov. 30, 1858 | H. Knowles | Improvement in saw-mills | reciprocating sawmills | |
| 81,764 | Sep. 01, 1868 | I. Fisher | Improvement in Vises | bench vises | |
| 90,689 | Jun. 01, 1869 | I.S. Roland | Improvement in spoke-lathes | wood lathes | |
| 128,127 | Jun. 18, 1872 | R. Daniels | Improvement in axles for vehicles | ||