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| All Patents in class 192/69.7 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 326,994 | Sep. 29, 1885 | M. Lafever | Traction Engine Gear | ||
 | 2,225,091 | Dec. 17, 1940 | G.C. Wilhide | Portable power driven screw or bolt driving and nut running machine | |
| 2,677,447 | May 04, 1954 | G.O. Johnson | Clutch tripping mechanism for punch presses and other machine tools | ||
| 2,696,897 | Dec. 14, 1954 | C.E. Miller | clutch | ||
| 2,717,676 | Sep. 13, 1955 | G.O. Johnson | Clutch for punch presses | ||