Erickson; Lennart G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Erickson; Lennart G..The latest application filed is for "organic sludge-energy recycling method".
- Erickson; Lennart G. - Palo Alto CA
- Erickson; Lennart G. - San Mateo CA
| Patent | Date |
|---|---|
| Organic sludge-energy recycling method Grant 4,342,650 - Erickson , et al. * August 3, 1 | 1982-08-03 |
| Biological sludge-energy recycling method Grant 4,267,049 - Erickson , et al. * May 12, 1 | 1981-05-12 |
| Wastewater energy recycling method Grant 4,159,944 - Erickson , et al. July 3, 1 | 1979-07-03 |
| Ventilated Shelter Structure For Cattle Confinement Feedlot Grant 3,875,901 - Erickson , et al. April 8, 1 | 1975-04-08 |
| Sprinkler Irrigation Apparatus And Method Grant 3,703,990 - Erickson November 28, 1 | 1972-11-28 |
| Apparatus For Sprinkler Irrigation Grant 3,610,531 - Erickson October 5, 1 | 1971-10-05 |
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