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| Patents for Simon MacKay | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,052,605 | Feb. 11, 1913 | S. MacKay | Grinding Machine | sharpening machines | |
| 1,052,649 | Feb. 11, 1913 | J.W. Boynton | Grinding Machine | sharpening machines | |
| 1,079,420 | Nov. 25, 1913 | S. MacKay | Method of Adjusting Rotary Cutters | sharpening machines | |