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| Patents for A. M. Billings | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,450 | Jun. 25, 1850 | T.A. Ambrose, A.M. Billings | Connecting and Disconnecting Hubs and Axles | ||
| 7,899 | Jan. 14, 1851 | A.M. Billings | Improved Method of Detaching a Wheel from its Axletree | axle nut wrenches that lock nut to wheel hub | |