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| Patents for George S. Gilman | |||||
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| Number | Date | Patentee | Title | Type | |
| 33,126 | Aug. 20, 1861 | M. Stannard | Improvement in rotary pumps | ||
| 36,479 | Sep. 16, 1862 | F.A. Pratt | Tool-rest for turning-lathes | metal lathe accessories and attachments | |
| 623,898 | Apr. 25, 1899 | G.S. Gilman | Reversing Mechanism | industrial machine speed and direction changing mechanisms | |