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| All Patents in class 474/69 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 352,368 | Nov. 09, 1886 | C.E. Skinner | Gas Engine Speeder | ||
| 1,292,995 | Feb. 04, 1919 | C.H. Beach | Means for mounting sewing-machine motors | ||
 | 2,716,350 | Aug. 30, 1955 | R.D. Phares | Slow speed converter motor drive | |
| 5,690,567 | Nov. 25, 1997 | M. Lindner, J.F. DeNijs | Transmission for Converting Rotary Motion into Linear Motion | ||