| Patents for Joseph L. Hewes |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 54,153 | Apr. 24, 1866 | J.L. Hewes | Improvement in cut-off valves | |
| 112,626 | Mar. 14, 1871 | P.I. Perrin, J.L. Hewes | Improvement in machines for tapping boilers | tapping machines |
| 127,768 | Jun. 11, 1872 | J.L. Hewes | Improvement in stop-valves for water-pipes | |
| 148,884 | Mar. 24, 1874 | J.L. Hewes | Improvement in machines for making gear-wheel patterns | dovetailing machines |
| 153,254 | Jul. 21, 1874 | J.L. Hewes | Metal Planing Machines | metal planers |
| 164,736 | Jun. 22, 1875 | J.L. Hewes | Improvement in valve-gears for steam-engines | steam engines |
