| All Patents in class 30/276 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 143,084 | Sep. 23, 1873 | J.K. Laudermilch | Improvement in jeweler's drilling devices | spiral drills |
| 239,703 | Apr. 05, 1881 | A.A. Bennett | Hand circular saw | handheld circular saws |
| 2,263,136 | Nov. 18, 1941 | L.M. Knouse, C. Powers | Handle structure for portable saws | handheld circular saws |
| 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 | |
| 4,860,451 | Aug. 29, 1989 | L. Zatulovsky, E.J. Pilatowicz | String trimmer | |
| 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 | |
