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| All Patents in class 74/383 | |||||
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| Number | Date | Patentee | Title | Type | |
| 801,542 | Oct. 10, 1905 | T.A. Panyard | Grinding and polishing machine | sharpening machines | |
| 975,789 | Nov. 15, 1910 | T.A. Panyard | Gearing | cutter grinding | |
| 994,216 | Jun. 06, 1911 | J.M. Thompson | Grinding-machine | sharpening machines | |
| 1,298,653 | Apr. 01, 1919 | E. Bockshe | Adjustable casing for grinders | hand grinders | |
| 1,491,287 | Apr. 22, 1924 | J. Canning | Circular sawing machine | ||