(19)

(11)

EP 0 067 810 A1

(12)

(43) Date of publication: 29.12.1982 Bulletin 1982/52 (21) Application number: 81901382.0 (22) Date of filing: 24.12.1980

(51) International Patent Classification (IPC):  G06F 7/ 76( . ) (86) International application number: PCT/US1980/001729 (87) International publication number: WO 1982/002267 (08.07.1982 Gazette 1982/17)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (71) Applicant: ISAACSON, Joel Dov University City, MO 63130 (US)	(72) Inventor: ISAACSON, Joel Dov University City, MO 63130 (US) (74) Representative: Hoffmann, Klaus, Dr. rer. nat.  Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20 D-81925 München D-81925 München (DE)