David Rich

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Town and Country, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
High efficiency ventilation system
- Patent number 9,891,005
- Issue date Feb 13, 2018
- David Rich
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
HIGH EFFICIENCY VENTILATION SYSTEM
- Publication number 20180120035
- Publication date May 3, 2018
- David Rich
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
HIGH EFFICIENCY VENTILATION SYSTEM
- Publication number 20150135755
- Publication date May 21, 2015
- David Rich
- F28 - HEAT EXCHANGE IN GENERAL