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| All Patents in class 409/191 | |||||
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| Number | Date | Patentee | Title | Type | |
| 42,616 | May 03, 1864 | W. Wright | Improved machine for boring curved cylinders | drilling and boring | |
| 1,734,308 | Nov. 05, 1929 | G.D. Sundstrand | Milling Machine | milling machines | |
| 2,379,405 | Jul. 03, 1945 | J.B. Armitage | Milling Machine | milling machines | |
| 2,814,964 | Dec. 03, 1957 | C.H. Werth | Contour boring and turning machine | vertical boring mills | |
| 3,220,314 | Nov. 30, 1965 | W.L. Vearil | Mechanism for Orbital Movement of Milling Machine Spindle | milling machines | |