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| All Patents in class 409/87 | |||||
| Number | Date | Patentee | Title | Type | |
| 274,391 | Mar. 20, 1883 | M.J. Salm | Engraving Machine | metal engraving machines | |
| 3,168,003 | Feb. 02, 1965 | H. Lanzenberger, J. Müller | Universal Machine Tool | milling machines | |