| All Patents in class 81/106 |
Patents 1 -
10
of 72
      |
| Picture | Number | Date | Patentee | Title |
 | 27,622 | Mar. 27, 1860 | J.H. Doolittle | Improved Pipe-Wrench |
 | 33,223 | Sep. 03, 1861 | J.A. Wilcox | Instrument For Turning Pipe or Other Round Rods |
 | 55,190 | May 29, 1866 | W.W. Wills | Improvemetnt in Pipe-Wrenches |
 | 68,431 | Sep. 03, 1867 | J.N. Freestone | Improved Pipe-Wrench |
 | 96,776 | Nov. 16, 1869 | J.W. Close | Improvement in Combined Screw and Pipe-Wrench and Pipe-Cutter |
 | 104,913 | Jun. 28, 1870 | J.A. Wilcox | Improvement In Pipe-Wrench |
 | 111,422 | Jan. 31, 1871 | O.G. Barrett | Pipe Wrench |
 | 121,372 | Nov. 28, 1871 | H.A. Hyle | Improvement in Wrenches |
 | 155,485 | Sep. 29, 1874 | J. Bedman | Pipe-Wrenches |
 | 168,852 | Oct. 19, 1875 | W.K. Stevens | Improvement in Pipe-Wrenches |
