(19)

(11)

EP 0 608 269 A1

(12)

(43) Date of publication: 03.08.1994 Bulletin 1994/31 (21) Application number: 92920419.0 (22) Date of filing: 15.09.1992

(51) International Patent Classification (IPC):  G09F 9/ 00( . ) G09F 13/ 04( . ) G09F 9/ 37( . ) (86) International application number: PCT/US1992/007790 (87) International publication number: WO 1993/008555 (29.04.1993 Gazette 1993/11)

(84) Designated Contracting States: DE ES FR GB IT NL SE (30) Priority: 15.10.1991 US 19910775805 (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul, Minnesota 55133-3427 (US)	(72) Inventor: BRADSHAW, Thomas, I. Saint Paul, MN 55133-3427 (US) (74) Representative: Baillie, Iain Cameron  c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)