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| Patents for E. F. Stewart | |||||
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| Number | Date | Patentee | Title | Type | |
| 776,598 | Dec. 06, 1904 | E.E. Kettelsen | Wrench | quick adjust wrenches | |
| 881,530 | Mar. 10, 1908 | E. Barker | Gluing Clamp | clamps | |
| 918,450 | Apr. 13, 1909 | H.F. Howland | Wrench | wedge adjust wrenches | |
| 944,468 | Dec. 28, 1909 | W.O. Stanley | Wrench | chain and strap wrenches | |
| 951,367 | Mar. 08, 1910 | W. DuCharme | Combination Tool | wrench combination tools | |
| 959,322 | May 24, 1910 | W. DuCharme | Wrench | pipe wrenches | |
| 970,371 | Sep. 13, 1910 | U.C. Greggs | Wrench | wrench jaw components | |