| All Patents in class 81/408 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 14,243 | Feb. 12, 1856 | F. Keehnold | Improvement in the Construction and Manufacturing of Adjustable Wrenches for Machinery and Carriages and other Purposes | pliers type wrenches |
| 95,706 | Oct. 12, 1869 | V.K. McElheny | Improvement in Combined Pipe-Tongs and Wrench | pipe tongs |
| 230,595 | Jul. 27, 1880 | G.H. Warren | Wrench | quick adjust wrenches |
| 350,199 | Oct. 05, 1886 | H. Hubler | Improvement in Pipe-Tongs and Cutters | pipe tongs |
| 389,666 | Sep. 18, 1888 | B. Reagan | Improvements in Pipe Tongs | pipe tongs |
| 416,500 | Dec. 03, 1889 | R.J. Robbins | Pipe Wrench | pipe wrenches |
| 521,582 | Jun. 19, 1894 | F.E. Burgevin | Wrench | wrench combination tools |
| 543,331 | Jul. 23, 1895 | J.C. Burgess | Pipe Wrench | pipe wrenches |
| 562,101 | Jun. 16, 1896 | G.D. Stevens | Pipe Wrench | pipe wrenches |
| 578,249 | Mar. 02, 1897 | M.D. Letteer | Combination Tool | wrench combination tools |
| 603,494 | May 03, 1898 | J.R. Huffman, F. Aaron | Wrench | quick adjust wrenches |
| 606,317 | Jun. 28, 1898 | G.R. Van Schoick | Wrench | quick adjust wrenches |
| 627,401 | Jun. 20, 1899 | W.H. Edwards | Adjustable Nut Cracker | nutcrackers |
| 644,825 | Mar. 06, 1900 | T. Jensen | Improvements in Tongs and Wrenches | pliers type wrenches |
| 660,963 | Oct. 30, 1900 | J.P. Kibler | Wrench | pipe wrenches |
