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| Patents for George L. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 60,950 | Jan. 01, 1867 | H.K. Smith | Lathe Rest | engine lathes | |
| 198,216 | Dec. 18, 1877 | H. Butler, H. Ross, Sr. | Improvement in machines for upsetting bars and tires | tire shrinkers | |
| 276,541 | Apr. 24, 1883 | W.D. Sloan | Wire nail | ||