Crawford; Roy Randall
Patent Applications and Registrations
Patent applications and USPTO patent grants for Crawford; Roy Randall.The latest application filed is for "ventilation controller".
- Crawford; Roy Randall - Blanchard OK
- Crawford; Roy Randall - Tyler TX
| Patent | Date |
|---|---|
| Ventilation Controller App 20220082279 - Helt; Robert Wayne ; et al. | 2022-03-17 |
| Ventilation controller Grant 11,199,334 - Helt , et al. December 14, 2 | 2021-12-14 |
| Ventilation Controller App 20190093911 - Helt; Robert Wayne ; et al. | 2019-03-28 |
| System and method of charge management Grant 9,267,717 - Sapp , et al. February 23, 2 | 2016-02-23 |
| Ventilation Controller App 20150253025 - Helt; Robert W. ; et al. | 2015-09-10 |
| Ventilation controller Grant 9,115,907 - Helt , et al. August 25, 2 | 2015-08-25 |
| Ventilation Controller App 20150093984 - Helt; Robert W. ; et al. | 2015-04-02 |
| Ventilation controller Grant 8,961,282 - Helt , et al. February 24, 2 | 2015-02-24 |
| Ventilation Controller App 20140182833 - Helt; Robert W. ; et al. | 2014-07-03 |
| System and Method of Charge Management App 20130340451 - Sapp; Gary Lee ; et al. | 2013-12-26 |
| Charge Port For Microchannel Heat Exchanger Systems App 20130255294 - Crawford; Roy Randall | 2013-10-03 |
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