| All Patents in class 81/391 |
Patents 1 -
10
of 43
      |
| Picture | Number | Date | Patentee | Title |
 | 136,350 | Feb. 25, 1873 | T. Williams | Pipe-Wrenches |
 | 139,174 | May 20, 1873 | F.H. Merrill | Improved Pipe Tongs |
 | 172,550 | Jan. 25, 1876 | J.R. Brown | Pipe-Tongs |
 | 174,142 | Feb. 29, 1876 | C.B. Martin | Improvement in Nut-Crackers |
 | 186,099 | Jan. 09, 1877 | E.F. Barnes | Pipe Tongs and Cutter |
 | 186,925 | Feb. 06, 1877 | W. Dicks | Improvements in Adjustable-Grasp Wrenches |
 | 259,895 | Jun. 20, 1882 | C.H. Miller | Pipe Tongs |
 | 266,310 | Oct. 24, 1882 | D.R. Porter | Combined Wrench, Vise and Nail Puller |
 | 282,256 | Jul. 31, 1883 | E.F. Barnes | Improvements in Pipe-Tongs and Wrench Combined |
 | 419,816 | Jan. 21, 1890 | B.G. Berrien, Jr. | Improved Pipe Wrench |
