Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4781327 | Dynamic protective shield for pop-up sprinklers | Kenneth L. Lawson, Enric C. Mendoza | 1988-11-01 |
| 4713038 | Marble race game | William J. Wichman | 1987-12-15 |
| 4681259 | Rotary drive sprinkler | Giles A. Kendall, Joseph Han, Christopher Moralez, Calvin A. Gongwer | 1987-07-21 |
| 4379976 | Planocentric gear drive | Edward J. Pitchford | 1983-04-12 |
| 4335853 | Motion transmission device | Robert S. Szemeredi | 1982-06-22 |
| 4216913 | Method and apparatus for enhancing the distribution of water from an irrigation sprinkler | — | 1980-08-12 |
| 4195782 | Method and device for enhancing the distribution of water from a sprinkler operated at low pressures | — | 1980-04-01 |