Douglas G. Hibberd

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Prescott, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Facility environmental control system
- Patent number 5,793,646
- Issue date Aug 11, 1998
- Conservation Through Innovation, Ltd.
- Douglas Hibberd
- G05 - CONTROLLING REGULATING
Information Patent Grant
Facility environmental control system
- Patent number 5,581,478
- Issue date Dec 3, 1996
- Michael Cruse
- G05 - CONTROLLING REGULATING