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| Patents for H. F. Doyle | |||||
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| Number | Date | Patentee | Title | Type | |
| 572,186 | Dec. 01, 1896 | M. Wenger | Wrench | quick adjust wrenches | |
| 596,825 | Jan. 04, 1898 | W.E. Pugsley | Wrench | nut wrenches | |
| 819,921 | May 08, 1906 | H.C. Pomeroy | Hook and Eyelet Setting Machine | riveters | |