| All Patents in class 29/21 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 267,353 | Nov. 14, 1882 | C.M. Letz | Machine for Notching and Trimming Electotypes | printer |
| 653,050 | Jul. 03, 1900 | H. Winter | Machine for trimming stereotype-plates | engraver |
| 813,756 | Feb. 27, 1906 | F. Wesel | Folio-mortising machine | engraver |
| 943,129 | Dec. 14, 1909 | G.H. Vining | Machine for sawing and trimming type, plates, &c. | printer |
| 1,082,521 | Dec. 30, 1913 | K. Hoepfner | Metal saw and trimmer | metal sawing machines |
| 1,114,329 | Oct. 20, 1914 | J.C. Backert | Cutting-machine for rules and slugs | tablesaws |
| 2,651,240 | Sep. 08, 1953 | D.E. Sutton | Machine for shaving electrotypes, stereotypes, and the like | |
