| All Patents in class 81/65.2 |
Patents 1 -
15
of 25
      |
| Number | Date | Patentee | Title | Type |
| 160,179 | Feb. 23, 1875 | D. Gilbert | Improvement in Pipe-Wrenches | chain and strap wrenches |
| 181,990 | Sep. 05, 1876 | O.H. Smith | Improvement in Tubing-Chain Wrenches | chain and strap wrenches |
| 225,216 | Mar. 09, 1880 | O.T. Earle | Means for Applying Bands to Hose, etc. | clamps |
| 257,344 | May 02, 1882 | W.T. Kosinski | Device For Converting Motion | chain and strap wrenches |
| 334,276 | Jan. 12, 1886 | J.J. Palmer | Pipe Tongs | chain and strap wrenches |
| 336,468 | Feb. 16, 1886 | M.R. Chrystal, C. Bonnichsen | Pipe Wrench | chain and strap wrenches |
| 412,096 | Oct. 01, 1889 | P.H. Kane | Improvements in Pipe-Tongs | chain and strap wrenches |
| 430,994 | Jun. 24, 1890 | E.O. Ely | Pipe-Wrench | chain and strap wrenches |
| 520,712 | May 29, 1894 | C.P. Mosher, N.R. Streeter | Chain Pipe Wrench | chain and strap wrenches |
| 536,553 | Mar. 26, 1895 | J.H. Vinton | Chain Wrench | chain and strap wrenches |
| 555,931 | Mar. 10, 1896 | G.F. Crass | Chain Pipe Wrench | chain and strap wrenches |
| 567,492 | Sep. 08, 1896 | W. Cook, J. Musgrave | Pipe Wrench | chain and strap wrenches |
| 594,563 | Nov. 30, 1897 | R.A. Ryrie | Pipe Wrench | chain and strap wrenches |
| 640,084 | Dec. 26, 1899 | C.A. Bohner, P.H. Bohner | Chain Pipe Wrench | chain and strap wrenches |
| 648,766 | May 01, 1900 | R. MacKay | Pipe Wrench | chain and strap wrenches |
