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Patent applications and USPTO patent grants for Worthington; Mark N..The latest application filed is for "air conditioner with three stages of indirect regeneration".
Patent | Date |
---|---|
Air conditioner with three stages of indirect regeneration Grant 4,660,390 - Worthington April 28, 1 | 1987-04-28 |
Multi-mode solar heating and cooling system Grant 4,128,124 - Worthington December 5, 1 | 1978-12-05 |
Multi-purpose solar collector/heat exchanger Grant 4,068,652 - Worthington January 17, 1 | 1978-01-17 |
Solar heating/cooling system Grant 4,049,046 - Worthington September 20, 1 | 1977-09-20 |
Solar collector -- heat exchanger Grant 3,957,109 - Worthington May 18, 1 | 1976-05-18 |
Direct Reading Comfort Index Thermometer Grant 3,771,364 - Worthington November 13, 1 | 1973-11-13 |
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