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| All Patents in class 81/120 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,601,798 | Jul. 01, 1952 | H.U. Spence | Socket Wrench | socket wrenches | |
| 2,810,311 | Oct. 22, 1957 | W.D. Smith | Threaded-Closure-Turning Tool | jar wrenches | |