| All Patents in class 192/70.3 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 808,975 | Jan. 02, 1906 | H.G. Dittbenner | Friction-clutch | metalworking power transmission |
| 834,857 | Oct. 30, 1906 | T.H. Worrall | Clutch | metalworking power transmission |
| 835,373 | Nov. 06, 1906 | H.R. Stacks | Friction-clutch | industrial machine clutches |
| 890,810 | Jun. 16, 1908 | H.R. Stacks | Friction-clutch | industrial machine clutches |
| 924,397 | Jun. 08, 1909 | H.R. Stacks | Friction-clutch | industrial machine clutches |
| 924,850 | Jun. 15, 1909 | G.W. Starr | Friction Clutch | industrial machine clutches |
| 1,878,149 | Sep. 20, 1932 | H.L. Johnston | Mixing machine | |
