Inventor

WITHRINGTON ROGER J

US4 patents

⚠️ This page may combine multiple inventors who share the name “WITHRINGTON ROGER J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HUGHES AIRCRAFT CO

3 patents

US4218111AAug 19, 1980

Holographic head-up displays

HUGHES AIRCRAFT CO209 citations96

US3940204AFeb 24, 1976

Optical display systems utilizing holographic lenses

HUGHES AIRCRAFT CO390 citations96

US4828356AMay 9, 1989

Method for fabrication of low efficiency diffraction gratings and product obtained thereby

HUGHES AIRCRAFT CO25 citations89

RAYTHEON CO

1 patent

US6792028B2Sep 14, 2004

Method and laser beam directing system with rotatable diffraction gratings

RAYTHEON CO81 citations96