| All Patents in class 74/30 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 228,432 | Jun. 01, 1880 | G.W. Zeigler | Treadle Power Machine | human powered apparatus |
| 760,610 | May 24, 1904 | F.W. Burpee | Shingle-machine | shingle machines |
| 1,257,532 | Feb. 26, 1918 | A. Risk | Hand Operated Apparatus for Rotating Drills or Other Rotary Tools or Implements | |
| 2,540,427 | Feb. 06, 1951 | J.E. Justus, L.J. Charles | Locomotive Control Throttle Handle | diesel locomotives |
| 2,566,685 | Sep. 04, 1951 | F. Tvrzicky | Micrometer Calipers | micrometers |
| 2,615,372 | Oct. 28, 1952 | E.E. Coffin | Milling Machine Spindle Axial Shift Control | machine tool controls |
