| Patents for George T. Pinckney |
Patents 16 -
30
of 80
      |
| Number | Date | Patentee | Title | Type |
| RE4,980 | Jul. 16, 1872 | M. Stephens | Improvement in joints for cement-pipes | pipes |
| 132,699 | Oct. 29, 1872 | M. Stephens | Improvement in pipe-couplings | pipes |
| 137,970 | Apr. 15, 1873 | M. Stephens | Improvement in cement-lined pipes | pipes |
| 141,091 | Jul. 22, 1873 | A.P. Stephens | Improvement in broaching-machines | tool making machines |
| 142,528 | Sep. 02, 1873 | M. Stephens | Improvement in cement-lined pipes | pipes |
| 143,273 | Sep. 30, 1873 | W.D. Chase | Machine for Cutting and Threading Pipes, &c. | pipe threading machines |
| 143,473 | Oct. 07, 1873 | M. Stephens | Improvement in machines for punching sheet metal | metal punching machines |
| 150,266 | Apr. 28, 1874 | E.A. Sutcliffe | Governors for Engines | steam engine governors |
| 155,473 | Sep. 29, 1874 | N. Stephens | Improvement in cement-lined pipes | pipes |
| 156,386 | Oct. 27, 1874 | B.F. Stephens | Improvement in movable vise-jaws | vise jaws |
| 158,539 | Jan. 05, 1875 | M. Stephens | Improvement in cement pipes | pipes |
| 163,341 | May 18, 1875 | M. Stephens | Improvement in devices for connecting, holding, and punching sections of sheet-metal pipe | sheet metal |
| 165,241 | Jul. 06, 1875 | H.J. Lewis | Improvement in stereoscopes | |
| 166,319 | Aug. 03, 1875 | W.H. Tappae | Improvement in machinery for making blinds | windowblind machines |
| 179,926 | Jul. 18, 1876 | J. Lawrence | Improvement in cutter-heads | cutterheads |
