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| All Patents in class 409/263 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,170,010 | Feb. 01, 1916 | M.A. Smith | Automatic metal-shaping machine | |
| 1,815,647 | Jul. 21, 1931 | L.H. Blood | Broaching Machine | ||
| 1,848,044 | Mar. 01, 1932 | L.H. Blood | Broaching Machine | ||
 | 2,025,070 | Dec. 24, 1935 | E.E. Nygren | Metal cutting machine | |
 | 2,063,955 | Dec. 15, 1936 | B.P. Schiltz | Apparatus for machining metal parts | |
 | 2,088,119 | Jul. 27, 1937 | B.P. Schiltz | Method of machining metallic workpieces | |
| 2,282,720 | May 12, 1942 | W.L. Groene | Crankshaft Broaching Lathe | ||