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John Covington
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Carrollton, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Portable power and signal distribution system for a controllable sy...
Patent number
9,961,743
Issue date
May 1, 2018
Production Resource Group L.L.C.
James Bornhorst
G05 - CONTROLLING REGULATING
Information
Patent Grant
Portable power and signal distribution system for a controllable sy...
Patent number
8,901,416
Issue date
Dec 2, 2014
Production Resource Group, L.L.C.
James Bornhorst
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Portable power and signal distribution system for a controllable sy...
Patent number
8,203,828
Issue date
Jun 19, 2012
Production Resource Group L.L.C.
James Bornhorst
G05 - CONTROLLING REGULATING
Information
Patent Grant
Universal power module
Patent number
6,031,749
Issue date
Feb 29, 2000
Vari-Lite, Inc.
John Henry Covington
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Techniques for controlling remote lamp loads
Patent number
5,798,619
Issue date
Aug 25, 1998
Vari-Lite, Inc.
John H. Covington
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Modular lamp power supply system
Patent number
5,640,061
Issue date
Jun 17, 1997
Vari-Lite, Inc.
James Martin Bornhorst
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Regulated power supply apparatus and method using reverse phase ang...
Patent number
4,688,161
Issue date
Aug 18, 1987
Vari-Lite, Inc.
John H. Covington
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
Portable Power and Signal Distribution System for a Controllable Sy...
Publication number
20150084437
Publication date
Mar 26, 2015
PRODUCTION RESOURCE GROUP L.L.C
James Bornhorst
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Portable Power and Signal Distribution System for a Controllable Sy...
Publication number
20120257331
Publication date
Oct 11, 2012
PRODUCTION RESOURCE GROUP L.L.C
James Bornhorst
G05 - CONTROLLING REGULATING
Information
Patent Application
CABLE TESTER FOR STAGE LIGHTING ENVIRONMENT
Publication number
20080180107
Publication date
Jul 31, 2008
PRODUCTION RESOURCE GROUP L.L.C
Robin Lee
G01 - MEASURING TESTING
Information
Patent Application
Portable power and signal distribution system for a controllable sy...
Publication number
20060163945
Publication date
Jul 27, 2006
James Bornhorst
G05 - CONTROLLING REGULATING