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| Patents for Richard Walker | |||||
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| Number | Title | Classification(s) | |||
| 7,482X | Water wheel and applying water thereto | 239/251 | |||
| 8,264X | Windlass | 74/159 | |||
| 5,149 | File Cutting Machine | 48/199R, 76/15 | |||
| 51,765 | Spoke Gage | 33/203.19 | |||