Roger J. Withrington

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Los Angeles, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and laser beam directing system with rotatable diffraction g...
- Patent number 6,792,028
- Issue date Sep 14, 2004
- Raytheon Company
- Lacy G. Cook
- G02 - OPTICS
Information Patent Grant
Method for fabrication of low efficiency diffraction gratings and p...
- Patent number 4,828,356
- Issue date May 9, 1989
- Hughes Aircraft Company
- Lowell M. Hobrock
- G02 - OPTICS
Information Patent Grant
Holographic head-up displays
- Patent number 4,218,111
- Issue date Aug 19, 1980
- Hughes Aircraft Company
- Roger J. Withrington
- G02 - OPTICS
Information Patent Grant
Optical display systems utilizing holographic lenses
- Patent number 3,940,204
- Issue date Feb 24, 1976
- Hughes Aircraft Company
- Roger J. Withrington
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Method and laser beam directing system with rotatable diffraction g...
- Publication number 20030179804
- Publication date Sep 25, 2003
- Lacy G. Cook
- G02 - OPTICS