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| All Patents in class 409/172 | |||||
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| Number | Date | Patentee | Title | Type | |
| 367,954 | Aug. 09, 1887 | A.H. Brainard | Milling Machine | milling machines | |
| 463,836 | Nov. 24, 1891 | J. Hunzinger | Wood-carving machine | carving machines | |
| 536,416 | Mar. 26, 1895 | J.L. Bogert | Milling-machine | milling machines | |
| 1,239,911 | Sep. 11, 1917 | C.L. Heisler | Milling Machine | milling machines | |
| 1,274,084 | Jul. 30, 1918 | H.C. Ross | Milling Machine | milling machines | |
| 1,932,377 | Oct. 24, 1933 | E.G. Roehm | Milling Machine | milling machines | |
| 2,392,963 | Jan. 15, 1946 | H.L. Heywood, J.B. Armitage | Milling Machine | milling machines | |