(19)

(11)

EP 0 024 387 A1

(12)

(43) Date of publication: 11.03.1981 Bulletin 1981/10 (21) Application number: 79901230.0 (22) Date of filing: 23.02.1979

(51) International Patent Classification (IPC):  G09F 3/ 00( . ) G09F 3/ 04( . ) (86) International application number: PCT/US1979/000114 (87) International publication number: WO 1980/001750 (04.09.1980 Gazette 1980/20)

(84) Designated Contracting States: CH DE FR GB LU (71) Applicant: HASKELL, Sylvan K. Pittsburgh, PA 15232 (US)	(72) Inventor: HASKELL, Sylvan K. Pittsburgh, PA 15232 (US)