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Patent applications and USPTO patent grants for Kortmann; Robert W..The latest application filed is for "wind, solar and hybrid wind-solar water circulation and aeration methods and apparatus".
Patent | Date |
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Wind, solar and hybrid wind-solar water circulation and aeration methods and apparatus Grant 8,651,766 - Kortmann February 18, 2 | 2014-02-18 |
Wind, Solar and Hybrid Wind-Solar Water Circulation and Aeration Methods and Apparatus App 20110147289 - Kortmann; Robert W. | 2011-06-23 |
Pneumatic bubble aeration reactor and method of using same Grant 5,755,976 - Kortmann May 26, 1 | 1998-05-26 |
Apparatus and method for conditioning stratified water bodies Grant 4,724,086 - Kortmann February 9, 1 | 1988-02-09 |
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