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| Patents for Wm. G. Henderson | |||||
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| Number | Date | Patentee | Title | Type | |
| 122,916 | Jan. 23, 1872 | R.S. Sanborn | Improvement in Rotating Wrenches | ratchet wrenches | |
| 128,696 | Jul. 09, 1872 | J.W. Arnold | Improvement in Clapboard or Siding-Gauges | clapboard markers | |
| 226,836 | Apr. 27, 1880 | A.M. Colt | Bolt-Holder | clamps | |