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| Patents for Joseph R. Brown | |||||
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| Number | Date | Patentee | Title | Type | |
| 42,525 | Apr. 26, 1864 | J.S. Brown | Friction Clutch | friction clutches | |
| 45,294 | Nov. 29, 1864 | J.R. Brown | Improved Cutter for Cutting Gear-Wheels | milling machine cutters | |
| 46,521 | Feb. 21, 1865 | J.R. Brown | Improved Milling Machine | milling machines | |
| 51,257 | Nov. 28, 1865 | J.R. Brown | Screw Cutting Machine | screw machines | |
| 56,495 | Jul. 17, 1866 | L.F. Grant | Improvement in Making Gear-Cutters | milling machines | |