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| All Patents in class 192/109F | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,938,780 | Dec. 12, 1933 | B. Sassen, L.F. Nenninger | Power Operated Clutch for Machine Tools | metalworking power transmission | |
| 3,089,572 | May 14, 1963 | C. Herfurth | Machine Tool System Control Mechanism | milling machines | |