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All Patents in class 73/322 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 810 | Jun. 27, 1838 | A. Amsden | Hydrostatic Scale | |
![]() | 1,332,276 | Mar. 02, 1920 | I.A. Weaver | Liquid-dispensing appliance | |
2,497,694 | Feb. 14, 1950 | S. Shakin | Tank Gauge |