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| All Patents in class 188/317 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,145,983 | Jul. 13, 1915 | J.B. French | Cushioning Piston for Power Hammers or the Like | ||
| 1,172,410 | Feb. 22, 1916 | W.E. Villinger | Clutch-controlling means | motor vehicles | |