| All Patents in class 81/182 |
Patents 31 -
45
of 58
      |
| Number | Date | Patentee | Title | Type |
| 517,393 | Mar. 27, 1894 | H.A. Post | Combination Wrench | pipe and nut combination wrenches |
| 521,265 | Jun. 12, 1894 | R. Haberthur | Combined Wrench and Pipe and Thread Cutter | |
| 522,471 | Jul. 03, 1894 | J. Kohler | Combination Tool For Pipe Fitting | pipe tongs |
| 543,953 | Aug. 06, 1895 | A.W. Whitney, F.A. Whitney | Pipe Wrench and Cutter | wrench jaw components |
| 546,139 | Sep. 10, 1895 | J. Ford | Wrench | pipe wrenches |
| 554,225 | Feb. 04, 1896 | W.H. Rush | Wrench | combination tools |
| 569,533 | Oct. 13, 1896 | H.C. Atkinson | Combined Pipe Wrench and Cutter | |
| 570,934 | Nov. 10, 1896 | C. Weinstein, D. Kritcher | Combination Tool for Pipe Fitters | combination tools |
| 575,381 | Jan. 19, 1897 | N.E. Smith | Compound Metal Working Tool | wrench combination tools |
| 578,249 | Mar. 02, 1897 | M.D. Letteer | Combination Tool | wrench combination tools |
| 583,892 | Jun. 08, 1897 | R.H. Daniels | Combination Wrench | pipe wrenches |
| 584,180 | Jun. 08, 1897 | M. Levendusky | Combined Pipe Wrench And Cutter | pipe wrenches |
| 617,462 | Jan. 10, 1899 | W.W. Davis | Combination tool | combination tools |
| 630,925 | Aug. 15, 1899 | P.H. Poppert | Pipe Wrench and Cutter | pipe wrenches |
| 635,220 | Oct. 17, 1899 | G.S. Adams | Combination Too | combination tools |
