| All Patents in class 81/408 |
Patents 1 -
10
of 23
      |
| Picture | Number | Date | Patentee | Title |
 | 14,243 | Feb. 12, 1856 | F. Keehnold | Improvement in the Construction and Manufacturing of Adjustable Wrenches for Machinery and Carriages and other Purposes |
 | 95,706 | Oct. 12, 1869 | V.K. McElheny | Improvement in Combined Pipe-Tongs and Wrench |
 | 230,595 | Jul. 27, 1880 | G.H. Warren | Wrench |
 | 350,199 | Oct. 05, 1886 | H. Hubler | Improvement in Pipe-Tongs and Cutters |
 | 389,666 | Sep. 18, 1888 | B. Reagan | Improvements in Pipe Tongs |
 | 416,500 | Dec. 03, 1889 | R.J. Robbins | Pipe Wrench |
 | 521,582 | Jun. 19, 1894 | F.E. Burgevin | Wrench |
 | 543,331 | Jul. 23, 1895 | J.C. Burgess | Pipe Wrench |
 | 562,101 | Jun. 16, 1896 | G.D. Stevens | Pipe Wrench |
 | 578,249 | Mar. 02, 1897 | M.D. Letteer | Combination Tool |
