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| All Patents in class 318/646 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,780,800 | Feb. 05, 1957 | M.T. Thorsson, L.J. Lauler | Remote Indicator for Scales | ||
| 2,873,107 | Feb. 10, 1959 | L.J. Lyons | Weighing Scale System | ||
| 3,084,754 | Apr. 09, 1963 | K.C. Allen | Computing scale | ||