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| Patents for Otto Risch | |||||
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| Number | Date | Patentee | Title | Type | |
| 245,752 | Aug. 16, 1881 | J. Siegley | Siegley Combination Plane | combination planes | |
| 257,982 | May 16, 1882 | J.A. Schmidt | Nippers For Opening Bottles | pliers | |
| 266,042 | Oct. 17, 1882 | M. Merz | Dovetail Gage | dovetail gauges | |
| 290,183 | Dec. 11, 1883 | G.F. Hildenbrand | Faucet-Hole Attachment For Barrel | wrenches | |