DG

Donald E. Griffey

ZE Zenith Electronics: 4 patents #84 of 411Top 25%
Overall (All Time): #1,302,857 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4855864 High voltage shutdown circuit with brightness tracking — 1989-08-08
4820959 Projection CRT protection circuit — 1989-04-11
4723167 Turn-off circuit for projection television CRT — 1988-02-02
4521720 Projection TV CRT burn protection — 1985-06-04