| All Patents in class 74/512 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 117,234 | Jul. 18, 1871 | G. Clisbee | Friction Clutch | industrial machine clutches |
| 232,365 | Sep. 21, 1880 | G.W. Passell | Friezing-machine | wood shapers |
| 1,437,319 | Nov. 28, 1922 | A.B. Landis | Automobile clutch | motor vehicles |
| 1,500,365 | Jul. 08, 1924 | J.C. Carlton | Transportable Throttle Device | machine tool controls |
| 1,857,905 | May 10, 1932 | C.G. Wilderson | Control mechanism | woodworking machine mechanisms |
| 2,195,087 | Mar. 26, 1940 | G.O. Johnson | Return or counterbalance for punch press controls | |
