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| All Patents in class 177/259 | |||||
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| Picture | Number | Date | Patentee | Title | |
| AI89 | Aug. 14, 1849 | E. Ellicott, S.A. Abbott | Lever scale for canals and railways | ||
| 2,415,570 | Feb. 11, 1947 | W.H. Ward | Weighing Scale | ||