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| All Patents in class 235/61.0PK | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,860,867 | Nov. 18, 1958 | L.B. Biebel, K.C. Allen | Computing scale | ||
| 2,895,121 | Jul. 14, 1959 | W.R. Bliss | Read-out apparatus for movable indicating mechanisms | computer apparatus and systems | |