| Patents for D. Saunders' Sons |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 170,119 | Nov. 16, 1875 | A. Saunders | Threading Die Stock | tap wrenches and die stocks |
| 176,694 | Apr. 25, 1876 | E. Saunders | Improvement in Screw-Cutting Die-Stocks | plumber |
| 176,815 | May 02, 1876 | A. Saunders | Pipe Cutter | pipe cutters |
| 204,254 | May 28, 1878 | A. Saunders | Improvement in Chucks | pipe and chain vises |
| 234,689 | Nov. 23, 1880 | A. Saunders | Pipe-Cutter | plumber |
| 235,902 | Dec. 28, 1880 | A. Saunders | Nipple Chuck | chucks |
| RE10,021 | Jan. 31, 1882 | A. Saunders | Pipe-Cutter | plumber |
| 252,903 | Jan. 31, 1882 | A. Saunders | Reamer | plumber |
| 265,639 | Oct. 10, 1882 | A. Saunders | Chuck | pipe threading machines |
| 368,012 | Aug. 09, 1887 | A. Saunders | Machine for Cutting Pipes or Rods | pipe cutting machines |
| 372,490 | Nov. 01, 1887 | A. Saunders | Machine for Cutting and Screw Threading Tubes, &c. | pipe threading machines |
| 406,857 | Jul. 09, 1889 | A. Saunders | Screw Cutting Die | pipe threading machines |
