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| All Patents in class 409/291 | |||||
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| Number | Date | Patentee | Title | Type | |
| 414,526 | Nov. 05, 1889 | G.M. Guerrant | Engraving Machine | metal engraving machines | |
| 431,578 | Jul. 08, 1890 | G.M. Guerrant | Means for Moving and Guiding Turning Engraving or Planing Tools | metal lathe accessories and attachments | |
| 647,975 | Apr. 24, 1900 | E. Liebert, H.A. Liebert | Automatic Feeding and Regulating Device for Machine Tools | metal lathe accessories and attachments | |
| 658,820 | Oct. 02, 1900 | E.S. Woods | Engraving-machine | ||