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| All Patents in class 177/68 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,238,916 | Mar. 08, 1966 | J.D. Hale | Indicator Mechanism for Scales | scales and balances | |
| 3,266,583 | Aug. 16, 1966 | J.D. Hale | Scale Indicator Mechanism Controlling Container Weighing and Filling Operations | scales and balances | |