Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6837448 | Nozzle device for spraying defined areas | Joseph Han | 2005-01-04 |
| 6478237 | Enclosed pop-up sprinklers with shielded impact arms | Don Michael Kearby, Joseph Han, Derick C. Wright | 2002-11-12 |
| 6209801 | Closed-case impact sprinklers with fitted fluid seal assemblies | Don Michael Kearby, Joseph Han, Derick C. Wright | 2001-04-03 |
| 6155493 | Closed-case impact sprinklers | Don Michael Kearby, Joseph Han, Derick C. Wright | 2000-12-05 |
| 5992760 | Impact sprinkler unit | Don Michael Kearby, Joseph Han, Derick C. Wright | 1999-11-30 |
| 4681259 | Rotary drive sprinkler | Edward M. Troup, Joseph Han, Christopher Moralez, Calvin A. Gongwer | 1987-07-21 |
| 4634082 | Extendable shock strut | — | 1987-01-06 |
| 4628797 | Rotary actuator | — | 1986-12-16 |
| 4360037 | Self-cleaning filter assembly for solenoid-actuated valve | — | 1982-11-23 |