Keith Kannengieszer

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Hatfield, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Counterbalance system for a tilt-in window having an improved shoe...
- Patent number 6,990,710
- Issue date Jan 31, 2006
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Shoeless curl spring counterbalance system for a tilt-in window
- Patent number 6,860,066
- Issue date Mar 1, 2005
- John Evans Sons, Inc
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Counterbalance system for a tilt-in window
- Patent number 6,857,228
- Issue date Feb 22, 2005
- John Evans Sons, Inc
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Counterbalance system for a tilt-in window having an improved shoe...
- Publication number 20050091791
- Publication date May 5, 2005
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Window sash counterbalance and position locking system for a tilt-i...
- Publication number 20040206003
- Publication date Oct 21, 2004
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Shoeless curl spring counterbalance system for a tilt-in window
- Publication number 20040206001
- Publication date Oct 21, 2004
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Counterbalance system for a tilt-in window
- Publication number 20040206002
- Publication date Oct 21, 2004
- John R. Kunz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES