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| All Patents in class 340/870.34 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,780,800 | Feb. 05, 1957 | M.T. Thorsson, L.J. Lauler | Remote Indicator for Scales | scales and balances | |
| 3,048,832 | Aug. 07, 1962 | A.O. Fitzner | Position Indicating Means for Machine Tools | machine tool controls | |