William Welch

Follow

Person

Yazoo City, MS, US

People

Patents Grantslast 30 patents

Information Patent Grant
Freezer alarm system and apparatus for refrigeration units
- Patent number 7,172,134
- Issue date Feb 6, 2007
- William Welch
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
Freezer alarm system and apparatus for refrigeration units
- Publication number 20050229611
- Publication date Oct 20, 2005
- William Welch
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...