| All Patents in class 81/90.5 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 122,638 | Jan. 09, 1872 | C. Neames | Combined Gas-Pipe Wrench, Gas-Pipe Vise and Square Wrench | pipe wrenches |
| 332,191 | Dec. 08, 1885 | C.L. Dunham | Pipe Wrench | chain and strap wrenches |
| 379,123 | Mar. 06, 1888 | H. Parmelee | Pipe Wrench | chain and strap wrenches |
| 547,653 | Oct. 08, 1895 | S.L. Wiegand, W.H. Burr | Pipe Wrench | chain and strap wrenches |
| 590,853 | Sep. 28, 1897 | H. Parmelee | Improvements in Pipe-Grips | chain and strap wrenches |
| 648,706 | May 01, 1900 | H. Parmelee | Pipe Wrench | chain and strap wrenches |
| 871,436 | Nov. 19, 1907 | R. Parmelee | Pipe Wrench | chain and strap wrenches |
