Spencer; Lloyd
Patent Applications and Registrations
Patent applications and USPTO patent grants for Spencer; Lloyd.The latest application filed is for "irrigation emitter tube".
- Spencer; Lloyd - Pasadena CA
| Patent | Date |
|---|---|
| Irrigation emitter tube Grant 4,385,727 - Spencer May 31, 1 | 1983-05-31 |
| Irrigation emitter Grant 4,382,549 - Christy , et al. May 10, 1 | 1983-05-10 |
| Multiple emitter flow control Grant 4,147,307 - Christy , et al. April 3, 1 | 1979-04-03 |
| Means and method of installing emitters in irrigation tubing Grant 4,122,590 - Spencer October 31, 1 | 1978-10-31 |
| Flush-drip irrigation emitter Grant 4,113,180 - Christy , et al. September 12, 1 | 1978-09-12 |
| Irrigation emitter Grant 4,058,257 - Spencer November 15, 1 | 1977-11-15 |
| Self-flushing irrigation valve Grant RE29,022 - Spencer November 2, 1 | 1976-11-02 |
| Intermittent Irrigation System Grant 3,797,741 - Spencer March 19, 1 | 1974-03-19 |
| Continuous Tube Trickle Irrigation Grant 3,797,754 - Spencer March 19, 1 | 1974-03-19 |
| Trickle Irrigation System Grant 3,779,468 - Spencer December 18, 1 | 1973-12-18 |
| Vertically Movable Self-locking Shutter Grant 3,578,060 - Spencer May 11, 1 | 1971-05-11 |
| SEC | 0001430184 | Spencer Lloyd |
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