Donald E. Griffey

ZE Zenith Electronics: 4 patents #84 of 411Top 25%

📍 Skokie, IL: #164 of 674 inventorsTop 25%

🗺 Illinois: #21,447 of 84,256 inventorsTop 30%

Overall (All Time): #1,302,857 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
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