| All Patents in class 81/180.1 |
Patents 1 -
15
of 66
      |
| Number | Date | Patentee | Title | Type |
| 30,579 | Nov. 06, 1860 | W. Kearney | Improvements in Wrenches for Pipes and Stud-Bolts | pipe wrenches |
| 62,062 | Feb. 12, 1867 | J. Peace | Pipe Tongs and Cutter | pipe tongs |
| 76,519 | Apr. 07, 1868 | A.S. Petrie | Improvement inWrenches | nut wrenches |
| 85,273 | Dec. 29, 1868 | J. Burt | Wrench | nut holders on wrenches |
| 85,276 | Dec. 29, 1868 | J. Burt | Improvement in Wrenches | wrench jaw components |
| 107,425 | Sep. 13, 1870 | H. Tregallas | Improvement in Wrenches | pipe and nut combination wrenches |
| 107,539 | Sep. 20, 1870 | F.P. Rand | Improvement in Wrenches | angle adjustable wrenches |
| 127,902 | Jun. 11, 1872 | H.R. Leonard | Improvement in Balance or Indicator Wrench | torque wrenches |
| 132,058 | Oct. 08, 1872 | D. Cumming, Jr. | Improvement in Attachment for Wrenches | wrench handle components |
| 168,852 | Oct. 19, 1875 | W.K. Stevens | Improvement in Pipe-Wrenches | pipe wrenches |
| 186,575 | Jan. 23, 1877 | S.N. Jessop | Pipe-Tongs | pipe tongs |
| 199,539 | Jan. 22, 1878 | G.A. Harbaugh | Pipe-Tongs | pipe tongs |
| 200,971 | Mar. 05, 1878 | A.E. Warren, A. Berdan | Wrench for Taking Off and Holding Burrs of Carriages, etc. | axle nut wrenches |
| 207,500 | Aug. 27, 1878 | P. Campbell | Combined Wrench and Tool for Locking Nuts in Position Upon Bolts | nut wrenches |
| 227,768 | May 18, 1880 | G.W. Griffiths | Pipe-Wrench | alligator wrenches |
