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| All Patents in class 81/394 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,372,241 | Mar. 22, 1921 | J. McGhee | Pipe-Wrench | pipe wrenches | |
| 1,387,659 | Aug. 16, 1921 | J.J. O'Keefe | Footprint Spanner | pliers type wrenches | |
| 1,407,577 | Feb. 21, 1922 | T.J. Pryor | Wrench or Spanner | pliers type wrenches | |
| 1,429,517 | Sep. 19, 1922 | J. McGhee | Combined Pipe and Nut Wrench | pipe and nut combination wrenches | |
| 2,325,245 | Jul. 27, 1943 | J. Hahn | Plier Type Wrench | pliers type wrenches | |
| 2,358,858 | Sep. 26, 1944 | J. Hahn | Plier Type Wrench | pliers type wrenches | |