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| Patents for J. McRoberts | |||||
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| Number | Date | Patentee | Title | Type | |
| 678,062 | Jul. 09, 1901 | G.S. Tarbell | Self-Storing & Feeding Tack Hammer | tack hammers | |
| 1,074,128 | Sep. 30, 1913 | J.F. McCanna | Lubricator | steam engine lubricators | |
| 1,300,210 | Apr. 08, 1919 | E.J. Cady | Micrometer Caliper | micrometers | |
| 1,354,010 | Sep. 28, 1920 | E.J. Cady, A. Wyzenbeek | Micrometer Caliper | dial indicator gauges | |