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| Patents for Empire Implement Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 575,737 | Jan. 26, 1897 | A.S. Robinson | Machine for grinding knives of cutter-bars | |
 | 658,426 | Sep. 25, 1900 | J.H. Burck | Tool-grinding machine | |