John Longan

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Burlington, VT, US

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Patents Grantslast 30 patents

Information Patent Grant
System for purifying and removing contaminants from gaseous fluids
- Patent number 6,939,397
- Issue date Sep 6, 2005
- Eco-Rx, Inc.
- Roger Nelsen
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
System for purifying and removing contaminants from gaseous fluids
- Publication number 20050000365
- Publication date Jan 6, 2005
- Roger Nelsen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE