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| All Patents in class 177/185 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,167,204 | Jul. 25, 1939 | H.A. Hadley | Automatic Beam Stop | scales and balances | |
| 2,948,523 | Aug. 09, 1960 | K.C. Allen | Computing scale | ||