| All Patents in class 81/176.1 |
Patents 16 -
30
of 37
      |
| Number | Date | Patentee | Title | Type |
| 464,084 | Dec. 01, 1891 | D.S. Robinson | Wrench | firehose and hydrant wrenches |
| 469,487 | Feb. 23, 1892 | D. McCune | Hose Spanner | firehose and hydrant wrenches |
| 478,121 | Jul. 05, 1892 | W.S. Duvall, W. Miller | Wrench | pipe wrenches |
| 489,429 | Jan. 03, 1893 | G. Brigger | Wrench | wrenches |
| 506,961 | Oct. 17, 1893 | F.C. Williams | Tap Wrench | tap wrenches and die stocks |
| D24,773 | Oct. 22, 1895 | A.A. Spadone | Combined Wrench and Spanner | firehose and hydrant wrenches |
| 554,166 | Feb. 04, 1896 | S.M. West, H.C. Atkinson | Hydrant | firehose and hydrant wrenches |
| 579,748 | Mar. 30, 1897 | T. Haley | Hose-Strap and Spanner | firehose and hydrant wrenches |
| 582,238 | May 11, 1897 | F. Schrader | Adjustable Spanner-Wrench | wrench combination tools |
| 627,292 | Jun. 20, 1899 | C.T. Brant | Jar or Can Opener | jar wrenches |
| 845,709 | Feb. 26, 1907 | J.G. Gladding | Combined Ladder Hook, Spanner, and Hose Carrier | wrenches |
| 1,168,844 | Jan. 18, 1916 | J.J. Bartenstein | Wrench | quick adjust wrenches |
| 1,303,157 | May 06, 1919 | C.P. Brockway | Spline Shaft Spanner Wrench | spanner wrenches |
| 1,380,562 | Jun. 07, 1921 | M. Keating | Valve Plug Remover | |
| 1,527,772 | Feb. 24, 1925 | C.M. Baird | Fireman's Spanner | firehose and hydrant wrenches |
