RH

Roy Heppinstall

BB British Broadcasting: 1 patents #3 of 13Top 25%
EC English Electric Valve Co.: 1 patents #5 of 18Top 30%
Overall (1989): #63,035 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4820996 Amplifying arrangements Paul Eaton, George I. F. Tupper, Edmund K. Tunstall 1989-04-11