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| All Patents in class 409/311 | |||||
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| Number | Date | Patentee | Title | Type | |
| 136,204 | Feb. 25, 1873 | H. Barth | Machines for Planing Stereotype Plates | metal planers | |
| 511,277 | Dec. 19, 1893 | C.R. Schilling, C. Schraubstadter, Jr. | Block Shaving Machine | metal planers | |
| 609,643 | Aug. 23, 1898 | F. Wesel | Machine for shaving electrotypes, stereotypes, &c. | engraver | |