| All Patents in class 81/167 |
Patents 1 -
15
of 70
      |
| Number | Date | Patentee | Title | Type |
| 13,221 | Jul. 10, 1855 | B.F. Joslyn | Slide-Wrench | nut wrenches |
| 16,733 | Mar. 03, 1857 | B.F. Joslyn | Improvement in Screw-Wrenches | nut wrenches |
| 48,759 | Jul. 11, 1865 | W. Zimmerman | Improvement in revolving mortising-tools | mortising machines |
| 56,166 | Jul. 10, 1866 | B. Boardman | Improved Tool | wrench combination tools |
| 107,304 | Sep. 13, 1870 | D.C. Stillson | Improvement in Wrenches | screw adjust wrenches |
| 202,259 | Apr. 09, 1878 | C.W. Hilton | Wrench | wrenches |
| 212,298 | Feb. 18, 1879 | C.E. Billings | Wrench | screw adjust wrenches |
| 228,755 | Jun. 15, 1880 | R. Hayden | Monkey Wrench | nut wrenches |
| 261,217 | Jul. 18, 1882 | A.F. Fifield | Pipe Wrench | pipe tongs |
| 291,266 | Jan. 01, 1884 | N.W. Vandegrift, F. Armstrong | Pipe Wrench | pipe wrenches |
| 310,818 | Jan. 13, 1885 | J.F. Guthrie | Pipe Wrench | pipe wrenches |
| 334,085 | Jan. 12, 1886 | J.D. Otstot | Wrench | screw adjust wrenches |
| 344,406 | Jun. 29, 1886 | S.A. Rouse | Pipe Wrench | pipe wrenches |
| 366,322 | Jul. 12, 1887 | C.H. Johnson | Combination Tool | wrench combination tools |
| 383,544 | May 29, 1888 | J. Rose | Pipe Wrench | pipe wrenches |
