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| All Patents in class 177/180 | |||||
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| Number | Date | Patentee | Title | Type | |
| 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 | |
| 2,287,814 | Jun. 30, 1942 | K.C. Allen, D.A. Meeker | Scale | ||