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| Patents for W. O. Blackwood | |||||
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| Number | Date | Patentee | Title | Type | |
| 923,942 | Jun. 08, 1909 | S.A. Brockway | Ratchet Wrench | ratchet wrenches | |
| 1,101,889 | Jun. 30, 1914 | W.S. Stone | Wrench | axle nut wrenches that lock nut to wheel hub | |