| All Patents in class 81/99 |
Patents 31 -
45
of 110
      |
| Number | Date | Patentee | Title | Type |
| 291,934 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches |
| 295,204 | Mar. 18, 1884 | A. Modery, F.A. Schramm | Pipe Wrench | self-adjust wrenches |
| 298,043 | May 06, 1884 | N.W. Vandegrift | Wrench | pipe wrenches |
| 327,559 | Oct. 06, 1885 | A. Langstrom | Wrench | wrench jaw components |
| 329,221 | Oct. 27, 1885 | F.A. Schramm | Pipe Wrench | pipe wrenches |
| 338,731 | Mar. 30, 1886 | G.M. Gillett | Pipe Wrench | pipe wrenches |
| 341,815 | May 11, 1886 | H. Newton | Pipe Wrench | self-adjust wrenches |
| 343,038 | Jun. 01, 1886 | A. Langstrom | Wrench | self-adjust wrenches |
| 343,940 | Jun. 15, 1886 | H.H. Wilson | Wrench | pipe wrenches |
| 364,961 | Jun. 14, 1887 | J. Sample | Pipe Wrench | pipe wrenches |
| 392,300 | Nov. 06, 1888 | F. Armstrong, N.W. Vandegrift | Wrench | pipe wrenches |
| 424,858 | Apr. 01, 1890 | J. Clark | Wrench | pipe wrenches |
| 434,847 | Aug. 19, 1890 | J.L. Taylor | Pipe Wrench | pipe wrenches |
| 459,559 | Sep. 15, 1891 | T. Bird | Pipe-Wrench | pipe wrenches |
| 464,401 | Dec. 01, 1891 | J.L. Taylor | Improvement in Pivoted Sliding-Jaw Pipe and Nut Wrench | pipe wrenches |
