| All Patents in class 192/66.23 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 370,118 | Sep. 20, 1887 | J.L. Bogert | Friction-clutch | industrial machine clutches |
| 421,178 | Feb. 11, 1890 | W. Lewis | Machinery for Transmitting and Arresting Motion | clutches |
| 586,832 | Jul. 20, 1897 | J.G. Oliver, G.C. Bardons | Friction-clutch | industrial machine clutches |
| 909,768 | Jan. 12, 1909 | F. Donaldson | Winding-drum | hoists, winches, come-alongs |
| 1,699,968 | Jan. 22, 1929 | E.J. Hornberger | Friction Clutch | metalworking machine mechanisms |
| 2,167,450 | Jul. 25, 1939 | M.I. Ginsburg | Power transmitting unit | sewing machines |
| 2,831,352 | Apr. 22, 1958 | W.T. Elliott, R. Ball, E.C. Sturgeon | Combustion engine starting assemblies | |
