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Kidwell Environmental, Ltd., Inc.
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Tulsa, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Centrifugal heat transfer engine and heat transfer systems embodyin...
Patent number
6,334,323
Issue date
Jan 1, 2002
Kidwell Environmental, Ltd., Inc.
John Kidwell
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Centrifugal heat transfer engine and heat transfer systems embodyin...
Patent number
6,321,547
Issue date
Nov 27, 2001
Kidwell Environmental Ltd., Inc.
John Kidwell
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Centrifugal heat transfer engine and heat transfer system embodying...
Patent number
5,906,108
Issue date
May 25, 1999
Kidwell Environmental, Ltd., Inc.
John Kidwell
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Patents Applications
last 30 patents
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Patent Application
Centrifugal heat transfer engine and heat transfer systems embodyin...
Publication number
20030145616
Publication date
Aug 7, 2003
Kidwell Environmental, Ltd., Inc.
John Kidwell
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Application
Centrifugal heat transfer engine and heat transfer systems embodyin...
Publication number
20020092316
Publication date
Jul 18, 2002
Kidwell Environmental, Ltd. Inc.
John E. Kidwell
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...