(19)

(11)

EP 0 304 484 A1

(12)

(43) Date of publication: 01.03.1989 Bulletin 1989/09 (21) Application number: 88903523.0 (22) Date of filing: 15.03.1988

(51) International Patent Classification (IPC):  G09G 3/ 30( . ) (86) International application number: PCT/US1988/000737 (87) International publication number: WO 1988/007250 (22.09.1988 Gazette 1988/21)

(84) Designated Contracting States: DE FR GB (30) Priority: 16.03.1987 US 19870025904 (71) Applicant: THE CHERRY CORPORATION Waukegan Illinois 60087 (US)	(72) Inventors: CHANNING, Dean, A. Waukegan, Il 60085 (US) CHIANG, Lih, W. Waukegan, IL 60085 (US) (74) Representative: Wain, Christopher Paul, et al  A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE London WC1V 7LE (GB)