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| All Patents in class 177/255 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,664X | May 17, 1836 | C.P. Ladd | Platform balance | ||
| 278,903 | Jun. 05, 1883 | A.H. Emery | Platform-scale | scales and balances | |
| 278,905 | Jun. 05, 1883 | A.H. Emery | Platform-scale | scales and balances | |
| 1,993,592 | Mar. 05, 1935 | F.M. Carroll | Weighing scale | ||
| 2,137,150 | Nov. 15, 1938 | E.J. Von Pein | Scale | ||
| 3,407,891 | Oct. 29, 1968 | J.J. Wiegand | Load Cell Mountingof Load Receiver Means as a Scale Weighbridge | scales and balances | |