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| Patents for William D. Grimshaw | |||||
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| Number | Date | Patentee | Title | Type | |
| 35,309 | May 20, 1862 | W.D. Grimshaw | Power Hammer | power hammers | |
| 68,362 | Sep. 03, 1867 | W.D. Grimshaw | Improved drilling machine | drilling and boring | |