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| Patents for John W. Alexander | |||||
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| Number | Date | Patentee | Title | Type | |
| 247,987 | Oct. 04, 1881 | W.H. Brock | Chain Wrench | chain and strap wrenches | |
| 254,862 | Mar. 14, 1882 | W.H. Brock | Chain Wrench | chain and strap wrenches | |
| 270,202 | Jan. 09, 1883 | J. Charter | Gas Engine | gas and gasoline engines | |