William Randall Erwin

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Tyler, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
HVAC system with improved control switching
- Patent number 9,870,009
- Issue date Jan 16, 2018
- TRANE INTERNATIONAL INC.
- William Randall Erwin
- G05 - CONTROLLING REGULATING
Information Patent Grant
HVAC system with improved control switching
- Patent number 9,459,634
- Issue date Oct 4, 2016
- Trane International Inc.
- William Randall Erwin
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
HVAC System With Improved Control Switching
- Publication number 20170023955
- Publication date Jan 26, 2017
- TRANE INTERNATIONAL INC.
- William Randall Erwin
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HVAC System With Improved Control Switching
- Publication number 20140225455
- Publication date Aug 14, 2014
- William Randall Erwin
- G05 - CONTROLLING REGULATING