| Patents for Melvin Stephens |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 78,336 | May 26, 1868 | A.P. Stephens | Improved composite pipe | |
| 87,985 | Mar. 16, 1869 | A.P. Stephens | Improved rotary metal-cutter | cutters |
| 94,146 | Aug. 24, 1869 | M. Stephens | Improvement in joints for cement-pipes | pipes |
| 96,282 | Oct. 26, 1869 | A.P. Stephens | Improved base for bench-vises | bench vises |
| 125,345 | Apr. 02, 1872 | M. Stephens | Improvement in branch-couplings for cement pipes | pipes |
| 126,100 | Apr. 23, 1872 | M. Stephens | Improvement in devices for lining cement pipes | pipes |
| 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 |
| 142,528 | Sep. 02, 1873 | M. Stephens | Improvement in cement-lined pipes | pipes |
| 143,473 | Oct. 07, 1873 | M. Stephens | Improvement in machines for punching sheet metal | metal punching machines |
| 144,155 | Oct. 28, 1873 | M. Stephens | Improvement in rotary shears for metal | metalworking machines |
| 155,473 | Sep. 29, 1874 | N. Stephens | Improvement in cement-lined pipes | pipes |
| 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 |
