(19)

(11)

EP 0 273 904 A1

(12)

(43) Date of publication: 13.07.1988 Bulletin 1988/28 (21) Application number: 85905120.0 (22) Date of filing: 19.09.1985

(51) International Patent Classification (IPC):  E04H 12/ 32( . ) G09F 17/ 00( . ) (86) International application number: PCT/SE1985/000360 (87) International publication number: WO 1987/001755 (26.03.1987 Gazette 1987/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL (71) Applicant: ILVANDER, Karl Arne S-116 46 Stockholm (SE)	(72) Inventor: ILVANDER, Karl Arne S-116 46 Stockholm (SE) (74) Representative: Wibom, Hans Sven Erik, et al  Dr. Ludwig Brann Patentbyra AB P.O. Box 17192 S-104 62 Stockholm S-104 62 Stockholm (SE)