John Ruhnke

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Norwalk, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
System for determining overall heating and cooling system efficienies
- Patent number 7,200,468
- Issue date Apr 3, 2007
- John Ruhnke
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Tapered air purging circulator
- Patent number 6,431,461
- Issue date Aug 13, 2002
- John Ruhnke
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Air purging circulator
- Patent number 6,129,523
- Issue date Oct 10, 2000
- John Ruhnke
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
System for determining overall heating and cooling system efficienies
- Publication number 20050222715
- Publication date Oct 6, 2005
- John Ruhnke
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Tapered air purging circulator
- Publication number 20020125335
- Publication date Sep 12, 2002
- John Ruhnke
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL