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| All Patents in class 29/DIG.026 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 392,886 | Nov. 13, 1888 | S.J. Shimer | Machine for making washers | ||
| 1,814,267 | Jul. 14, 1931 | C.H. Swartz | Cylinder sleeve and method of producing the same | ||
 | 1,854,825 | Apr. 19, 1932 | E.L. Connell | Method of making alpha collet | |
 | 2,088,119 | Jul. 27, 1937 | B.P. Schiltz | Method of machining metallic workpieces | |
| 2,126,200 | Aug. 09, 1938 | B.A. Linderman | Method of making pump gears | ||
 | 2,285,772 | Jun. 09, 1942 | W.F. Groene, H.J. Siekmann | Method of machining crankshafts | |