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| All Patents in class 74/142 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,590,409 | Mar. 25, 1952 | E.S. Hineline | Hand-Held Roll-Film Camera | cameras | |
| 2,752,909 | Jul. 03, 1956 | L. Curran | Diamond Tool Holder | grinder dressers | |
| 2,956,452 | Oct. 18, 1960 | L.A. Dever | Indexing Mechanism | indexers and dividers | |