| All Patents in class 81/150 |
Patents 16 -
30
of 37
      |
| Number | Date | Patentee | Title | Type |
| 376,396 | Jan. 10, 1888 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 402,327 | Apr. 30, 1889 | F.A. Huehn | Combination Household Tool | combination tools |
| 403,895 | May 21, 1889 | W.R. Smith | Improvements in Vehicle-Axle-Nut Wrenches | axle nut wrenches that lock nut to wheel hub |
| 455,694 | Jul. 07, 1891 | E.H. Steltz | Wrench For Vehicle Wheels | axle nut wrenches that lock nut to wheel hub |
| 536,312 | Mar. 26, 1895 | E.N. Woodward | Wrench | axle nut wrenches |
| 537,212 | Apr. 09, 1895 | C.W. Loeffler | Wrench | brace wrenches |
| 541,827 | Jul. 02, 1895 | C. Becher | Improved wrench, key or spanner | quick adjust wrenches |
| 574,724 | Jan. 05, 1897 | M.K. Flye | Wrench | quick adjust wrenches |
| 588,049 | Aug. 10, 1897 | C.H. Avery | Wrench | quick adjust wrenches |
| 588,110 | Aug. 10, 1897 | H.W. Hoeft | Wrench | screw adjust wrenches |
| 603,530 | May 03, 1898 | E. Henwood | Wrench | quick adjust wrenches |
| 674,278 | May 14, 1901 | J. McNutt | Wrench and Clamp | bar and pipe clamps |
| 696,405 | Apr. 01, 1902 | R.A. Breul | Clamping Wrench | quick adjust wrenches |
| 696,406 | Apr. 01, 1902 | R.A. Breul | Wrench | quick adjust wrenches |
| 705,860 | Jul. 29, 1902 | J. O'Brien | Pipe and Nut Wrench | quick adjust wrenches |
