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| All Patents in class 235/60.4 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,894,683 | Jul. 14, 1959 | E.P. Davis | Mechanical indicating apparatus for computing machines | computer apparatus and systems | |
| 2,895,121 | Jul. 14, 1959 | W.R. Bliss | Read-out apparatus for movable indicating mechanisms | computer apparatus and systems | |