| All Patents in class 192/70.29 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 712,575 | Nov. 04, 1902 | M.F. McMahon | Friction-clutch | industrial machine clutches |
| 900,397 | Oct. 06, 1908 | P.M. Lange | Friction Clutch | metalworking machine mechanisms |
| 1,601,235 | Sep. 28, 1926 | G.F. Kolb, E.P. Bullard, Jr. | Clutch | metalworking machine mechanisms |
| 1,665,554 | Apr. 10, 1928 | G.F. Kolb | Clutch | |
| 1,683,528 | Sep. 04, 1928 | J.C. Carlton | Clutch Mechanism for Reversing Gear | radial drill presses |
| 1,717,833 | Jun. 18, 1929 | G.F. Kolb, E.P. Bullard, Jr. | Clutch | metalworking machine mechanisms |
