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| Patents for Robert M. Sutphen | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,033,634 | Jul. 23, 1912 | E.L. Stover, E.H. Stover | Spacing Compasses for Lettering | compasses | |
| 1,127,955 | Feb. 09, 1915 | M. Berthold | Caliper Gauge | measurement gauges | |
| 1,151,141 | Aug. 24, 1915 | J. Wheeler | Clapboard Marker | clapboard markers | |
| 1,157,763 | Oct. 26, 1915 | J.P. Cunningham | Tire Tool | ||
| D50,372 | Feb. 20, 1917 | J.P. Worthington | Wrench | axle nut wrenches | |