| All Patents in class 81/185.1 |
Patents 31 -
45
of 107
      |
| Number | Date | Patentee | Title | Type |
| 364,549 | Jun. 07, 1887 | F.C. Sawhill | Improvements in Pipe-Tongs | pipe tongs |
| 367,786 | Aug. 09, 1887 | E.O. Carvin | Improvement in Pipe-Tongs | pipe wrenches |
| 371,143 | Oct. 04, 1887 | E. Judson | Improvement in Attachments for Wrenches and Vises | pipe jaw attachments for wrenches |
| 372,080 | Oct. 25, 1887 | W.H. Mitchell | Combination Tool | pipe and nut combination wrenches |
| 382,975 | May 15, 1888 | B.R. Hagar | Wrench | pipe wrenches |
| 396,751 | Jan. 29, 1889 | T.E. Gawn, C.F. Laganke | Wrench Attachment | pipe jaw attachments for wrenches |
| 405,259 | Jun. 18, 1889 | J.S. Henry | Pipe Wrench Attachment for Sliding-Jaw Wrench | pipe jaw attachments for wrenches |
| D19,412 | Nov. 12, 1889 | B. Donohue | Design For an Insertible Jaw For Wrenches | wrench jaw components |
| 430,768 | Jun. 24, 1890 | M. Cooper | Pipe Tongs | pipe tongs |
| 433,794 | Aug. 05, 1890 | F.W. Kasch | Wrench | pipe wrenches |
| 442,190 | Dec. 09, 1890 | J.H. Lane | Wrench For Tightening the Spokes of Bicycle Wheels | spoke nipple wrenches |
| 448,124 | Mar. 10, 1891 | C.C. Conroy | Improvements in Pipe-Wrenches and Pipe-Tongs | wrench jaw components |
| 448,619 | Mar. 17, 1891 | C.F. West | Pipe Wrench | pipe wrenches |
| 450,707 | Apr. 21, 1891 | B.F. Bennett | Wrench | quick adjust wrenches |
| 454,893 | Jun. 30, 1891 | J.E. Wakefield | Pipe-Wrench | quick adjust wrenches |
