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| Patents for Black Diamond Saw & Machine Works | |||||
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| Number | Date | Patentee | Title | Type | |
| 942,531 | Dec. 07, 1909 | A.C. Ambler | Saw-setting machine | saw sharpening machines | |
| 2,147,227 | Feb. 14, 1939 | G.B. Ambler | Drill sharpening machine | drill sharpening machines | |