Herbert G. Ray

Follow

Person

St. Louis, MO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Water heater with dry tank or sediment detection feature
- Patent number 7,434,544
- Issue date Oct 14, 2008
- Emerson Electric Co.
- Donald E. Donnelly
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Water heater with dry tank or sediment detection feature
- Publication number 20070295286
- Publication date Dec 27, 2007
- Emerson Electric Co.
- Donald E. Donnelly
- F24 - HEATING RANGES VENTILATING