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| Patents for Billings and Spencer | |||||
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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 | |
| D26,111 | Sep. 29, 1896 | C.E. Billings | Billings 97 Pocket Wrench | bicycle or pocket wrenches | |
| 599,379 | Feb. 22, 1898 | C.E. Billings | Wrench | quick adjust wrenches | |
| 956,280 | Apr. 26, 1910 | G. Bryar | One-Piece Pipe Wrench | alligator wrenches | |