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| Patents for Luther Brothers Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 801,542 | Oct. 10, 1905 | T.A. Panyard | Grinding and polishing machine | sharpening machines | |
| 1,006,026 | Oct. 17, 1911 | J.M. Thompson | Gear-casing | hand grinders | |