| All Patents in class 30/347 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 69,473 | Oct. 01, 1867 | C.C. Parsons | Pipe and Bolt Cutter | pipe cutters |
| 166,954 | Aug. 24, 1875 | F.R. Woodward | Improvement in rotary paper-cutters | combination cork extractors |
| 445,700 | Feb. 03, 1891 | J. Lachaume, J. Pasteyer | Shears | shears |
| 1,833,980 | Dec. 01, 1931 | W.O. Thewes | Pipe cutter | pipe cutters |
| 3,877,146 | Apr. 15, 1975 | C.B. Pittinger | Rotating blade holder | |
| 4,490,910 | Jan. 01, 1985 | R.J. Landy, C.A. Mattson | Cutting head for string trimmer | |
| 4,603,478 | Aug. 05, 1986 | K.K. Anderson | Trimmer with adjustable handle | |
| 4,926,557 | May 22, 1990 | E.J. Haupt | Semi-automatic string trimmer head | |
| 4,942,664 | Jul. 24, 1990 | L. Zatulovsky | String trimmer with automatic feed | |
