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| All Patents of Type: universal joints | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-144,091 | Jun. 10, 1920 | O. Olson, G.R. Fullenwider | Improvements in Angular Socket Wrenches and Screwdrivers | wrench handle components | |
| 1,395,436 | Nov. 01, 1921 | F.K. Lawrence | Turning Tool | universal joints | |
| 2,895,314 | Jul. 21, 1959 | T.W. Helm | Universal joint | universal joints | |