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| All Patents in class 177/204 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,291,150 | Jul. 28, 1942 | G. Guldbrandsen, W.A. Dimick | Weighing Scale | scales and balances | |
| 2,864,605 | Dec. 16, 1958 | J.A. Roberts, M.T. Thorsson | Automatic Range Changer with Weight Pick-Up | scales and balances | |