| All Patents in class 30/102 |
Patents 16 -
30
of 64
      |
| Number | Date | Patentee | Title | Type |
| RE10,021 | Jan. 31, 1882 | A. Saunders | Pipe-Cutter | plumber |
| 277,590 | May 15, 1883 | J. McAlpin | Wrench | pipe and nut combination wrenches |
| 282,435 | Jul. 31, 1883 | E.F. Barnes | Pipe Cutter | pipe cutters |
| 287,899 | Nov. 06, 1883 | E.F. Barnes | Pipe-cutter | pipe cutters |
| 301,080 | Jul. 01, 1884 | L.C. Strickland, E.F. Barnes | Outside pipe-cutter | pipe cutters |
| 307,830 | Nov. 11, 1884 | A. Barbour | Pipe Wrench and Cutter Combined | wrench combination tools |
| 330,175 | Nov. 10, 1885 | N.W. Vandegrift, F. Armstrong | Pipe-cutter | plumber |
| 333,618 | Jan. 05, 1886 | R.C. Ellrich | Pipe Cutter | |
| 338,716 | Mar. 30, 1886 | F.H. Conner | Pipe Cutter | plumber |
| 343,233 | Jun. 08, 1886 | A.H. Esten | Pipe-cutter | plumber |
| 350,199 | Oct. 05, 1886 | H. Hubler | Improvement in Pipe-Tongs and Cutters | pipe tongs |
| 364,090 | May 31, 1887 | W.E. Clayton | Pipe Wrench and Cutter | combination tools |
| 372,080 | Oct. 25, 1887 | W.H. Mitchell | Combination Tool | pipe and nut combination wrenches |
| 396,753 | Jan. 29, 1889 | F.C. Knowles, R.B. Magee | Pipe Tongs | pipe tongs |
| 399,297 | Mar. 12, 1889 | G.H. Tucker | Combined Tool | combination tools |
