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| All Patents in class 30/275 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 425,572 | Apr. 15, 1890 | D.D. Tompkins | Self-oiling pulley | ||
| 824,480 | Jun. 26, 1906 | C.B. Hastings | Motor Tool Holder | ||
 | 1,492,554 | May 06, 1924 | V. Colby | Scroll-cutting machine | |
 | 1,663,267 | Mar. 20, 1928 | V.V. Colby | Means for cutting | |
 | 2,070,885 | Feb. 16, 1937 | V.V. Colby | Cutting machine | |
 | 2,193,878 | Mar. 19, 1940 | W.P. Gallagher | Cutting machine | |