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Patent applications and USPTO patent grants for Grizzle; Glen.The latest application filed is for "apparatus and method for adding fertilizer or other liquids to an irrigation system".
Patent | Date |
---|---|
Apparatus for adding fertilizer to water in a sprinkler system Grant 10,455,761 - Grizzle Oc | 2019-10-29 |
Apparatus And Method For Adding Fertilizer Or Other Liquids To An Irrigation System App 20110162745 - Grizzle; Glen ;   et al. | 2011-07-07 |
Apparatus And Method For Adding Fertilizer Or Other Liquids To An Irrigation System App 20100212764 - Grizzle; Glen ;   et al. | 2010-08-26 |
Apparatus for adding fertilizer to water in an underground sprinkling system and fertilizer therefor Grant 6,997,350 - Johnson , et al. February 14, 2 | 2006-02-14 |
Adjustable arc sprinkler head Grant 4,634,052 - Grizzle , et al. January 6, 1 | 1987-01-06 |
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