| All Patents in class 81/90.5 |
Patents 1 -
14
of 14
      |
| 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 |
| 566,678 | Aug. 25, 1896 | W.S. Gilmore | Pipe Wrench | chain and strap wrenches |
| 590,853 | Sep. 28, 1897 | H. Parmelee | Improvements in Pipe-Grips | chain and strap wrenches |
| 608,202 | Aug. 02, 1898 | A.M. Kleckner | Pipe Wrench | pipe wrenches |
| 626,401 | Jun. 06, 1899 | S.L. Wiegand | Pipe Wrench | 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 |
| 1,054,700 | Mar. 04, 1913 | W.H. Lutz | Compression Wrench | chain and strap wrenches |
| 1,081,684 | Dec. 16, 1913 | W.H. Lutz | Compression Wrench | chain and strap wrenches |
| 1,336,754 | Apr. 13, 1920 | R. Parmelee | Vise | pipe and chain vises |
| 3,885,479 | May 27, 1975 | K. Ono | Wrench | self-adjust wrenches |
