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David J. Lingrey
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San Antonio, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Control system for a room air conditioner and/or heat pump
Patent number
9,535,408
Issue date
Jan 3, 2017
Friedrich Air Conditioning Co., Ltd.
David J. Lingrey
G05 - CONTROLLING REGULATING
Information
Patent Grant
Apparatus and method for installation by unlicensed personnel of a...
Patent number
8,850,832
Issue date
Oct 7, 2014
Friedrich Air Conditioning Co, Ltd.
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Room air conditioner and/or heater
Patent number
8,752,399
Issue date
Jun 17, 2014
Friedrich Air Conditioning Co., Ltd.
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Room air conditioner and/or heat pump
Patent number
8,640,480
Issue date
Feb 4, 2014
Friedrich Air Conditioning Co., Ltd.
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Room air conditioner grill
Patent number
D616084
Issue date
May 18, 2010
Friedrich Air Conditioning Co., a division of U.S. Natural Resources, Inc.
David J. Lingrey
D23 - Environmental heating and cooling
Patents Applications
last 30 patents
Information
Patent Application
APPARATUS AND METHOD FOR INSTALLATION BY UNLICENSED PERSONNEL OF A...
Publication number
20120318005
Publication date
Dec 20, 2012
FRIEDRICH AIR CONDTIONING CO., LTD.
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Application
APPARATUS AND METHOD FOR INSTALLATION BY UNLICENSED PERSONNEL OF A...
Publication number
20120186277
Publication date
Jul 26, 2012
Friedrich Air Conditioning Co., a division of U.S. Natural Resources, Inc.
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Application
REMOTE CONTROL SYSTEM FOR A ROOM AIR CONDITIONER AND/OR HEAT PUMP
Publication number
20120053738
Publication date
Mar 1, 2012
Friedrich Air Conditioning Co., a division of U.S. Natural Resources, Inc.
David J. Lingrey
G05 - CONTROLLING REGULATING
Information
Patent Application
Room Air Conditioner And/Or Heater
Publication number
20110120155
Publication date
May 26, 2011
Friedrich Air Conditioning Co., a division of U.S. Natural Resources, Inc.
David J. Lingrey
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Application
Room Air Conditioner And/Or Heat Pump
Publication number
20110120167
Publication date
May 26, 2011
David J. Lingrey
F24 - HEATING RANGES VENTILATING
Information
Patent Application
Control System for a Room Air Conditioner and/or Heat Pump
Publication number
20110125328
Publication date
May 26, 2011
Friedrich Air Conditioning Co., a division of U.S. Natural Resources, Inc.
David J. Lingrey
G05 - CONTROLLING REGULATING