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| All Patents in class 177/171 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,225X | Sep. 22, 1832 | E. Fairbanks, T. Fairbanks | Balance steelyard | steel maker | |
| 278,902 | Jun. 05, 1883 | A.H. Emery | Platform-scale | scales and balances | |
| 278,903 | Jun. 05, 1883 | A.H. Emery | Platform-scale | scales and balances | |
| 407,747 | Jul. 23, 1889 | W.H. Stewart | Weighing Scale | scales and balances | |
| 2,032,910 | Mar. 03, 1936 | C.E. Breaden | Scale | ||
| 2,456,178 | Dec. 14, 1948 | W.A. Dimick | Balance Weight Assembly for Weighing Scales | scales and balances | |