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All Patents in class 451/194 | |||||
Number | Date | Patentee | Title | Type | |
2,245,654 | Jun. 17, 1941 | J.D. Rovick, J.C. Drader | Gear Lapping and Finishing Machine | gear lapping machines | |
2,456,061 | Dec. 14, 1948 | G. Hohwart | Double end center lapping machines | lapping machines |