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| Patents for William G. A. Bonwill | |||||
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| Number | Date | Patentee | Title | Type | |
| 50,328 | Oct. 10, 1865 | W.G. Bonwill | Improvement in Screw-Drivers | screwdriver blades | |
| 148,920 | Mar. 24, 1874 | W.G. Bonwill | Dental Drills and Lathes | dental apparatus | |
| 199,779 | Jan. 29, 1878 | W.G. Bonwill | Dental Engine | dental apparatus | |
| 282,044 | Jul. 31, 1883 | W.G. Bonwill | Dental or Surgical Engine | dental apparatus | |