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| Patents for Diamond Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 261,848 | Aug. 01, 1882 | B.H. Hadley | Emery Grinder | bench or pedestal grinders | |
| 388,784 | Aug. 28, 1888 | F. Mossberg | Twist-drill-grinding attachment | drill grinders | |
| 389,095 | Sep. 04, 1888 | F. Mossberg | Twist-drill-grinding attachment | drill grinders | |