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| All Patents in class 73/66 | |||||
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| Number | Date | Patentee | Title | Type | |
| 525,799 | Sep. 11, 1894 | G.W. Rymes | Device for balancing rotating parts | industrial machine mechanisms | |
| 587,930 | Aug. 10, 1897 | F. Coffin | Indicator for Lathes or Planers | dial indicator gauges | |
| 2,241,637 | May 13, 1941 | A.H. Dall, H. Ernst | Dynamic Balancing Mechanism for Machine Tools | grinding machines | |
| 2,331,733 | Oct. 12, 1943 | W.I. Senger | Unbalance Correction Method and Machine | balancing machinery | |