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| All Patents in class 177/4 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 361,689 | Apr. 26, 1887 | C.M. Giddings | Recording Dynamometer | |
| 2,921,780 | Jan. 19, 1960 | K.C. Allen | Weighing scales | ||
| 3,037,563 | Jun. 05, 1962 | K.C. Allen | Weighing scales | ||
| 3,044,691 | Jul. 17, 1962 | K.C. Allen | Computing scale | ||
| 3,388,758 | Jun. 18, 1968 | K.C. Allen, E.E. Boshinski | Automatic weighing scales with recording and totaling apparatus | ||