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| All Patents in class 177/227 | |||||
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| Number | Date | Patentee | Title | Type | |
| 278,912 | Jun. 05, 1883 | A.H. Emery | Dynamometer | testing machines | |
| 2,021,489 | Nov. 19, 1935 | K. Rauch | Scale | ||
| 2,039,339 | May 05, 1936 | J.S. Ogsbury | Thermostat for scales | ||
| 2,063,712 | Dec. 08, 1936 | E.J. Von Pein | Scale | ||