| All Patents in class 81/103 |
Patents 16 -
30
of 32
      |
| Number | Date | Patentee | Title | Type |
| 601,672 | Apr. 05, 1898 | J.G. Newell | Wrench | quick adjust wrenches |
| 605,901 | Jun. 21, 1898 | J.G. Newell | Pipe Wrench | pipe wrenches |
| 646,565 | Apr. 03, 1900 | E. Wright | Pipe Wrench | pipe wrenches |
| 650,077 | May 22, 1900 | W.T. Hatten | Pipe Wrench | pipe wrenches |
| 654,769 | Jul. 31, 1900 | G.S. Tilton | Wrench | quick adjust wrenches |
| 758,499 | Apr. 26, 1904 | C.F. Beach | Wrench | pipe wrenches |
| 955,893 | Apr. 26, 1910 | R. Miller, Jr. | Wrench | pipe wrenches |
| 995,947 | Jun. 20, 1911 | J.A. Borland | Wrench | pipe wrenches |
| 1,070,343 | Aug. 12, 1913 | H.F. Hoffmann | Pipe Wrench | pipe wrenches |
| 1,074,936 | Oct. 07, 1913 | W.R. Evans | Pipe Wrench | pipe wrenches |
| 1,155,955 | Oct. 05, 1915 | G.A. Parmenter | Improvements in Pipe and Nut Wrenches | pipe and nut combination wrenches |
| 1,278,653 | Sep. 10, 1918 | H.F. Hoffman | Pipe & Nut Wrench | pipe wrenches |
| 1,353,246 | Sep. 21, 1920 | A.W. Kiefer | Pipe Wrench | pipe wrenches |
| 1,380,566 | Jun. 07, 1921 | A.W. Kiefer | Pipe Wrench | pipe wrenches |
| 1,549,164 | Aug. 11, 1925 | W.O. Thewes | Pipe Wrench | pipe wrenches |
