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| All Patents in class 177/246 | |||||
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| Number | Date | Patentee | Title | Type | |
| 440,740 | Nov. 18, 1890 | F.H. Richards, C.H. Cooley | Scale-beam for grain-weighers | ||
| 442,720 | Dec. 16, 1890 | F.H. Richards | Grain-weigher | ||
| 1,996,976 | Apr. 09, 1935 | E.A. Reussenzehn | Scale poise | ||
| 3,031,021 | Apr. 24, 1962 | J.B. Rolfe, J.D. Hale | Magnetic Balance Indicator | scales and balances | |