Richard D. Keller

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Hastings, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Swing door
- Patent number 9,523,233
- Issue date Dec 20, 2016
- Hi-Fold Door Corporation
- Richard D Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic cylinder control
- Patent number 8,800,208
- Issue date Aug 12, 2014
- Hi-Fold Door Corporation
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic cylinder control
- Patent number 8,327,586
- Issue date Dec 11, 2012
- Hi-Fold Door Corporation
- Richard D Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic door opening mechanism and method of installing a bi-fold...
- Patent number 7,219,711
- Issue date May 22, 2007
- Hi-Fold Door Corporation
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Over center door closing mechanism
- Patent number 7,029,041
- Issue date Apr 18, 2006
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Over center door closing mechanism
- Patent number 6,547,292
- Issue date Apr 15, 2003
- Hi-Fold Door Corporation
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
SWING DOOR
- Publication number 20140096449
- Publication date Apr 10, 2014
- HI-FOLD DOOR CORPORATION
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC CYLINDER CONTROL
- Publication number 20130097931
- Publication date Apr 25, 2013
- HI-FOLD DOOR CORPORATION
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC CYLINDER CONTROL
- Publication number 20110185635
- Publication date Aug 4, 2011
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
SWING DOOR
- Publication number 20100058668
- Publication date Mar 11, 2010
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Hydraulic door opening mechanism and method of installing a bi-fold...
- Publication number 20050199355
- Publication date Sep 15, 2005
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Oven center door closing mechanism
- Publication number 20030193200
- Publication date Oct 16, 2003
- Richard D. Keller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES