Don F. Widmayer

Person

Bethesda, MD, US

People

Patents Grantslast 30 patents

Information Patent Grant
Manually controlable light feedback adjustment device for gas disch...
- Patent number 5,892,330
- Issue date Apr 6, 1999
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Control of AC power to inductive loads
- Patent number 5,519,311
- Issue date May 21, 1996
- Don Widmayer & Associates, Inc.
- Don F. Widmayer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable arc electronic ballast with continuous cathode heating
- Patent number 5,483,127
- Issue date Jan 9, 1996
- Don Widmayer & Associates, Inc.
- Don. F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Self protecting and automatic resetting capacitor synchronous switc...
- Patent number 4,933,798
- Issue date Jun 12, 1990
- Widmayer R&D Ventures
- Don F. Widmayer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for starting and operating fluorescent lamp an...
- Patent number 4,766,352
- Issue date Aug 23, 1988
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Transient control circuit for fluorescent lamp systems
- Patent number 4,642,525
- Issue date Feb 10, 1987
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Energy conserving automatic light output system
- Patent number 4,394,603
- Issue date Jul 19, 1983
- Controlled Environment Systems Inc.
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light regulation system
- Patent number 4,371,812
- Issue date Feb 1, 1983
- Controlled Environment Systems, Inc.
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Energy conservation system using current control
- Patent number 4,352,045
- Issue date Sep 28, 1982
- Flexiwatt Corporation
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light regulation system
- Patent number 4,234,820
- Issue date Nov 18, 1980
- Controlled Environments Systems
- Don F. Widmayer
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Plant growth method and apparatus
- Patent number 3,931,695
- Issue date Jan 13, 1976
- Controlled Environment Systems Inc.
- Don Frederick Widmayer
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Plant growth system
- Patent number 3,930,335
- Issue date Jan 6, 1976
- Controlled Environment Systems, Inc.
- Don F. Widmayer
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Don F. Widmayer

Person

Patents Grantslast 30 patents

Manually controlable light feedback adjustment device for gas disch...

Control of AC power to inductive loads

Variable arc electronic ballast with continuous cathode heating

Self protecting and automatic resetting capacitor synchronous switc...

Method and apparatus for starting and operating fluorescent lamp an...

Transient control circuit for fluorescent lamp systems

Energy conserving automatic light output system

Light regulation system

Energy conservation system using current control

Light regulation system

Plant growth method and apparatus

Plant growth system