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| All Patents in class 235/61L | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,285,399 | Nov. 19, 1918 | W.H. Runge | Speed-changing mechanism | |
| 1,686,383 | Oct. 02, 1928 | D.C. Klausmeyer | Cam Controlled Twenty-Four Speed Mechanism | ||
 | 1,709,233 | Apr. 16, 1929 | O.C. Schroeder | Mechanical movement | |
| 1,764,515 | Jun. 17, 1930 | D.C. Klausmeyer | Direct Reading Gear Shift Mechanism | ||
| 2,832,535 | Apr. 29, 1958 | J.M. Sherman | Computing scale | ||