Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9267632 | Coupling for pipe, and related methods | — | 2016-02-23 |
| 6561443 | Drip irrigation tape | — | 2003-05-13 |
| 6440510 | Irrigation hose splice | — | 2002-08-27 |
| 6090233 | Irrigation hose splice and method of making same | — | 2000-07-18 |
| 5785785 | Method of making constant flow irrigation tape | William A. Delmer, Robert Delmer, John W. Erickson, Ray Charles Emmons | 1998-07-28 |
| 5695127 | Constant-flow irrigation tape and method of making | William A. Delmer, Robert Delmer, John W. Erickson, Ray Charles Emmons | 1997-12-09 |
| 5620143 | Constant-flow irrigation tape and method of making | William A. Delmer, Robert Delmer, John W. Erickson, Ray Charles Emmons | 1997-04-15 |
| 5252162 | Multiple chamber drip irrigation hose made from a single strip | — | 1993-10-12 |
| 5192027 | Drip irrigation devices and plastic films with copper powder incorporated | Robert Delmer, William A. Delmer | 1993-03-09 |
| 5118042 | Multiple chamber drip irrigation hose | — | 1992-06-02 |
| 4548360 | Multichamber drip irrigation hose | William A. Delmer | 1985-10-22 |