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| All Patents in class 74/30 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 228,432 | Jun. 01, 1880 | G.W. Zeigler | Treadle Power Machine | ||
 | 760,610 | May 24, 1904 | F.W. Burpee | Shingle-machine | |
| 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 | ||
 | 2,566,685 | Sep. 04, 1951 | F. Tvrzicky | Micrometer Calipers | |
 | 2,615,372 | Oct. 28, 1952 | E.E. Coffin | Milling Machine Spindle Axial Shift Control | |