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Patent applications and USPTO patent grants for Delmer; William A..The latest application filed is for "constant-flow irrigation tape and method of making".
Patent | Date |
---|---|
Constant-flow irrigation tape and method of making Grant 5,695,127 - Delmer , et al. December 9, 1 | 1997-12-09 |
Multiple chamber drip irrigation hose made from a single strip Grant 5,252,162 - Delmer October 12, 1 | 1993-10-12 |
Drip irrigation devices and plastic films with copper powder incorporated Grant 5,192,027 - Delmer , et al. March 9, 1 | 1993-03-09 |
Multiple chamber drip irrigation hose Grant 5,118,042 - Delmer June 2, 1 | 1992-06-02 |
Multichamber drip irrigation hose Grant 4,548,360 - Delmer , et al. October 22, 1 | 1985-10-22 |
Multiple chamber drip irrigation hose Grant 4,235,380 - Delmer November 25, 1 | 1980-11-25 |
Multiple chamber drip irrigation hose Grant 4,196,853 - Delmer April 8, 1 | 1980-04-08 |
Solid Pellet And Self Cleaning Irrigation Device Grant 3,799,441 - Delmer March 26, 1 | 1974-03-26 |
Fibrous Self Cleaning Irrigation Device Grant 3,799,442 - Delmer March 26, 1 | 1974-03-26 |
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