| All Patents of Type: pipe wrenches |
Patents 1 -
15
of 1340
      |
| Number | Date | Patentee | Title | Type |
| 6,002 | Jan. 02, 1849 | F.H. Bartholomew, S. Merrick | Screw Wrench For Grasping Cylindrical Forms | pipe wrenches |
| 15,184 | Jun. 24, 1856 | G.A. Jenks | Wrench for Gas-Pipe, etc. | pipe wrenches |
| 18,135 | Sep. 08, 1857 | H.M. Clark | Hinged Claw and Screw-Adjusting Gripper Wrench | pipe wrenches |
| 19,842 | Apr. 06, 1858 | H.H. Gilmore | Pipe-Tongs | pipe tongs |
| 20,407 | Jun. 01, 1858 | A.G. Coes | Improved Wrench or Pipe-Tongs for Turning or Revolving Cylindrical Bodies | pipe tongs |
| 22,157 | Nov. 30, 1858 | J.R. Brown | Pipe-Tongs | pipe tongs |
| 23,857 | May 03, 1859 | G.B. Phillips | Improvement in Slide-Wrenches for Turning Gas Pipes and Other Round Articles | pipe wrenches |
| 24,175 | May 24, 1859 | H.J. Behrens | Improved Gripping Wrench | pipe wrenches |
| 24,927 | Aug. 02, 1859 | J.R. Brown | Pipe-Tongs | pipe tongs |
| 26,530 | Dec. 20, 1859 | G. Smith | Improvement in Grippers for Grasping and Turning Cylindrical Articles | pipe wrenches |
| 26,544 | Dec. 20, 1859 | J.R. Brown | Pipe-Cutter | pipe tongs |
| 27,622 | Mar. 27, 1860 | J.H. Doolittle | Improved Pipe-Wrench | pipe wrenches |
| 28,053 | May 01, 1860 | W.F. Beecher | Pipe-Wrench | pipe wrenches |
| 30,579 | Nov. 06, 1860 | W. Kearney | Improvements in Wrenches for Pipes and Stud-Bolts | pipe wrenches |
| 31,034 | Jan. 01, 1861 | E. Ripley | Improvements in Wrenches for Turning Pipes, Round Bolts, and Similar Articles | pipe wrenches |
