David J. MacFadyen

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Derwood, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Gas distribution system
- Patent number 5,126,934
- Issue date Jun 30, 1992
- Smart House, L.P.
- David J. MacFadyen
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Electrical and communication system capable of providing uninterrup...
- Patent number 5,101,191
- Issue date Mar 31, 1992
- Smart House Limited Partnership
- David J. MacFadyen
- G08 - SIGNALLING
Information Patent Grant
Automated appliance and energy distribution control system
- Patent number 4,899,129
- Issue date Feb 6, 1990
- Smart House Limited Partnership
- David J. MacFadyen
- G08 - SIGNALLING
Information Patent Grant
Communication and energy control system for houses
- Patent number 4,899,217
- Issue date Feb 6, 1990
- Smart House Limited Partnership
- David J. MacFadyen
- G08 - SIGNALLING