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| All Patents in class 101/390 | |||||
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| Number | Date | Patentee | Title | Type | |
| 138,660 | May 06, 1873 | W. Kelsey | Printing Press | ||
| 985,857 | Mar. 07, 1911 | J.R. Thomas | Clamping apparatus | clamps | |
| 2,546,197 | Mar. 27, 1951 | H.C. Frentzel, G.F. Morrison | Lock device for printers' chases | printer | |