David J. Engebretson

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Gig Harbor, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fenestration frame assemblies, e.g. retrofit window frame assemblie...
- Patent number 6,807,778
- Issue date Oct 26, 2004
- Comfort Design, Inc.
- David Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Window conversion unit
- Publication number 20060156653
- Publication date Jul 20, 2006
- David Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Fenestration frame assemblies and associated methods
- Publication number 20050050815
- Publication date Mar 10, 2005
- David Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Fenestration frame assemblies, e.g. retrofit window frame assemblie...
- Publication number 20040226232
- Publication date Nov 18, 2004
- Comfort Design, Inc.
- David Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Fenestration frame assemblies, e.g. retrofit window frame assemblie...
- Publication number 20030226321
- Publication date Dec 11, 2003
- David Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Application
Retrofit window frame and method
- Publication number 20030226320
- Publication date Dec 11, 2003
- David J. Engebretson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS