(19)
(11) EP 0 054 558 A1

(12)

(43) Date of publication:
30.06.1982 Bulletin 1982/26

(21) Application number: 81901692.0

(22) Date of filing: 19.06.1981
(51) International Patent Classification (IPC): 
G01R 13/ 00( . )
G02F 1/ 1343( . )
G09G 3/ 36( . )
G01R 13/ 40( . )
G09G 3/ 20( . )
(86) International application number:
PCT/GB1981/000105
(87) International publication number:
WO 1982/000206 (21.01.1982 Gazette 1982/03)
(84) Designated Contracting States:
CH DE FR LI NL

(30) Priority: 27.06.1980 GB 19800021073

(71) Applicant: NATIONAL RESEARCH DEVELOPMENT CORPORATION
London SE1 6BU (GB)

(72) Inventor:
  • SHANKS, Ian Alexander
    Malvern Worcestershire (GB)

(74) Representative: Gunning, William John 
Procurement Executive, Ministry of Defence Patents 1A(4), Room 1932 Empress State Building Lillie Road
London SW6 1TR
London SW6 1TR (GB)

   


(54) DUAL TRACE ELECTRO-OPTIC DISPLAY