| All Patents in class 81/99 |
Patents 16 -
30
of 110
      |
| Number | Date | Patentee | Title | Type |
| 179,816 | Jul. 11, 1876 | J. Passeno | Pipe-Tongs | pipe wrenches |
| 188,718 | Mar. 20, 1877 | V. Yantis | Improvement in Levers and Clamps | wrenches |
| 189,567 | Apr. 17, 1877 | E.R. Mathews | Pipe Wrench | pipe wrenches |
| 197,658 | Nov. 27, 1877 | A. Ochsner | Pipe-Tongs and Cutter | combination tools |
| 218,195 | Aug. 05, 1879 | H. Rhyn | Pipe-Wrench | pipe wrenches |
| RE8,961 | Nov. 11, 1879 | H. Rhyn | Pipe-Wrench | pipe wrenches |
| 235,083 | Dec. 07, 1880 | J.P. Haigh | Pipe or Cylinder Wrench | self-adjust wrenches |
| 248,588 | Oct. 25, 1881 | J.P. Haigh | Pipe-Wrench or Cylinder-Wrench | pipe wrenches |
| 262,840 | Aug. 15, 1882 | W. Tyack, R. Simmons | Wrench | pipe wrenches |
| 272,955 | Feb. 27, 1883 | J.P. Haigh | Pipe Wrench | pipe wrenches |
| 283,378 | Aug. 21, 1883 | G.W. Cook | Pipe Wrench | pipe jaw attachments for wrenches |
| 284,933 | Sep. 11, 1883 | G.W. Wilbur | Pipe Tongs | pipe tongs |
| 288,927 | Nov. 20, 1883 | H. Crowther | Improvement in Pipe Wrenches | pipe wrenches |
| 291,129 | Jan. 01, 1884 | W.C. Baskin | Wrench | quick adjust wrenches |
| 291,933 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches |
