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| All Patents in class 177/39 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,993,577 | Mar. 05, 1935 | E.J. Von Pein | Low drum scale | ||
| 1,993,606 | Mar. 05, 1935 | W.E. Jones, E.A. Reussenzehn | Scale attachment | ||
| 2,013,592 | Sep. 03, 1935 | E.A. Reussenzehn, E.J. Von Pein | Drum scale | ||
| 2,063,712 | Dec. 08, 1936 | E.J. Von Pein | Scale | ||
| 2,287,814 | Jun. 30, 1942 | K.C. Allen, D.A. Meeker | Scale | ||
| 2,408,942 | Oct. 08, 1946 | K.C. Allen, D.A. Meeker | Scale | ||
| 2,906,233 | Sep. 29, 1959 | H. Goldberg, E.A. Reussenzehn | Computing scale | ||