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| Patents for H. E. Billings | |||||
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| Number | Date | Patentee | Title | Type | |
| 532,634 | Jan. 15, 1895 | C.E. Billings | Wrench | screw adjust wrenches | |
| 536,063 | Mar. 19, 1895 | C.E. Billings | Wrench | quick adjust wrenches | |
| 547,197 | Oct. 01, 1895 | W.J. Belcher, F.C. Billings | Drop Hammer | drop hammers | |