| All Patents in class 81/186 |
Patents 31 -
45
of 203
      |
| Number | Date | Patentee | Title | Type |
| 242,130 | May 31, 1881 | S.E. Hurlbut | Wrench | alligator wrenches |
| 242,909 | Jun. 14, 1881 | J. Flanagan | Pipe Wrench | pipe wrenches |
| 245,398 | Aug. 09, 1881 | W. Phillips | Combination Tool | combination tools |
| 246,976 | Sep. 13, 1881 | J.F. Phillips | Pipe Wrench | pipe wrenches |
| 258,673 | May 30, 1882 | J.E. Preston | Wrench | wrench jaw components |
| 270,741 | Jan. 16, 1883 | F. Cajar | Pipe Wrench | pipe wrenches |
| 271,595 | Feb. 06, 1883 | S.A. Bostwick | Pipe Wrench | pipe wrenches |
| 272,573 | Feb. 20, 1883 | P. Mihan | Gas Burner and Pipe Pliers | pliers |
| 280,793 | Jul. 10, 1883 | A.W. Case | Pipe Wrench | alligator wrenches |
| 282,126 | Jul. 31, 1883 | F.A. Simonds | Improvements in Pipe Tongs or Wrenches | wrench jaw components |
| 287,193 | Oct. 23, 1883 | J.L. Taylor | Pipe Wrench | pipe wrenches |
| 296,540 | Apr. 08, 1884 | D.M. De Silva | EUREKA ALLIGATOR PIPE TONG OR WRENCH | pipe wrenches |
| 297,640 | Apr. 29, 1884 | F. Schmemann | Wrench | pipe wrenches |
| 299,440 | May 27, 1884 | W.D. Peddycord, C.D. Volkmann | Pipe Wrench | pipe wrenches |
| 311,202 | Jan. 27, 1885 | W.L. Parker | Wrench | quick adjust wrenches |
