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| Patents for M. Hamilton | |||||
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| Number | Date | Patentee | Title | Type | |
| 869,206 | Oct. 22, 1907 | H.C. Clark | Wrench | pipe wrenches | |
| 933,773 | Sep. 14, 1909 | L. Maisel | Measuring Device | adjustable parallels | |
| 967,448 | Aug. 16, 1910 | W.H. Sechler | Follow-Board Scriber | special purpose gauges | |