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| Patents for Narragansett Machine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 363,599 | May 24, 1887 | W.L. Coop | Exercising-machine | |
 | 765,908 | Jul. 26, 1904 | A.J. Thornley | Spool-machine | |
| 813,864 | Feb. 27, 1906 | H.L. Coit | Ball-bearing drill chuck | ||
 | 879,741 | Feb. 18, 1908 | H.L. Coit | Ball-bearing drill chuck | |