Chapin; Richard D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chapin; Richard D..The latest application filed is for "drip irrigation system employing flow regulation".
- Chapin; Richard D. - Watertown NY
| Patent | Date |
|---|---|
| Drip irrigation system employing flow regulation Grant 4,642,152 - Chapin * February 10, 1 | 1987-02-10 |
| Drip irrigation system Grant 4,626,130 - Chapin December 2, 1 | 1986-12-02 |
| Drip irrigation system employing adjacently arranged flow-restricting passages Grant 4,572,756 - Chapin February 25, 1 | 1986-02-25 |
| Drip irrigation system employing adjacently arranged flow-restricting passages Grant 4,534,515 - Chapin August 13, 1 | 1985-08-13 |
| Drip irrigation system employing flow regulation Grant 4,473,191 - Chapin September 25, 1 | 1984-09-25 |
| Water Distributing Hose Grant 3,698,195 - Chapin October 17, 1 | 1972-10-17 |
| Spinner Spray System Grant 3,682,389 - Chapin August 8, 1 | 1972-08-08 |
| Overhead Spray System Grant 3,630,448 - Chapin December 28, 1 | 1971-12-28 |
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