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Patents for John A. Hill | |||||
Number | Date | Patentee | Title | Type | |
594,399 | Nov. 30, 1897 | J.A. Hill | Wrench | quick adjust wrenches | |
666,838 | Jan. 29, 1901 | H.L. Arnold | Explosive-Engine | internal combustion engines | |
666,839 | Jan. 29, 1901 | H.L. Arnold | Internal Combustion Engine | internal combustion engines |