| All Patents in class 74/491 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 193,182 | Jul. 17, 1877 | H.C. Root | Improvement in saw-set and file-guide | saw gauges |
| 393,682 | Nov. 27, 1888 | M.F. Williams | Clutch-pulley | industrial machine pulleys and belt drive mechanisms |
| 681,152 | Aug. 20, 1901 | E.E. Thomas | Cone friction-clutch | industrial machine clutches |
| 917,015 | Apr. 06, 1909 | W. Runge, H.M. Darling | Gearing for machine-tools | industrial machine gearing |
| 2,540,427 | Feb. 06, 1951 | J.E. Justus, L.J. Charles | Locomotive Control Throttle Handle | diesel locomotives |
| 4,208,930 | Jun. 24, 1980 | O. Hermann | Spindle Control Mechanism | machine tool controls |
