Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5785785 | Method of making constant flow irrigation tape | William A. Delmer, Daniel W. C. Delmer, John W. Erickson, Ray Charles Emmons | 1998-07-28 |
| 5695127 | Constant-flow irrigation tape and method of making | William A. Delmer, Daniel W. C. Delmer, John W. Erickson, Ray Charles Emmons | 1997-12-09 |
| 5620143 | Constant-flow irrigation tape and method of making | William A. Delmer, Daniel W. C. Delmer, John W. Erickson, Ray Charles Emmons | 1997-04-15 |
| 5192027 | Drip irrigation devices and plastic films with copper powder incorporated | Daniel W. C. Delmer, William A. Delmer | 1993-03-09 |