Graybill; Andrew John
Patent Applications and Registrations
Patent applications and USPTO patent grants for Graybill; Andrew John.The latest application filed is for "refrigerant control system and method".
- Graybill; Andrew John - Etters PA
- Graybill; Andrew John - Hellam PA
| Patent | Date |
|---|---|
| Refrigerant control system for a flash tank Grant 10,203,140 - Kopko , et al. Feb | 2019-02-12 |
| Method for controlling an economizer circuit Grant 10,018,393 - Kopko , et al. July 10, 2 | 2018-07-10 |
| Refrigerant control system for a flash tank Grant 9,657,978 - Kopko , et al. May 23, 2 | 2017-05-23 |
| Refrigerant Control System And Method App 20160305697 - Kopko; William L. ; et al. | 2016-10-20 |
| Method For Controlling An Economizer Circuit App 20150330692 - KOPKO; William L. ; et al. | 2015-11-19 |
| System and method for controlling an economizer circuit Grant 9,121,627 - Kopko , et al. September 1, 2 | 2015-09-01 |
| System And Method For Controlling An Economizer Circuit App 20140013782 - Kopko; William L. ; et al. | 2014-01-16 |
| Refrigerant Control System And Method App 20110023515 - Kopko; William L. ; et al. | 2011-02-03 |
| Chiller sound reduction control system and method Grant 7,743,617 - Crane , et al. June 29, 2 | 2010-06-29 |
| Chiller sound reduction control system and method App 20050223725 - Crane, Curtis Christian ; et al. | 2005-10-13 |
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