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| All Patents in class 74/119 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,762,063 | Jun. 03, 1930 | G.H. Knight | Mechanical Movement | metalworking machine mechanisms | |
| 2,305,128 | Dec. 15, 1942 | L.J. Andresen, W.E. Gerbing | Variable speed feed mechanism | industrial machine pulleys and belt drive mechanisms | |