(19)

(11)

EP 0 348 411 A1

(12)

(43) Date of publication: 03.01.1990 Bulletin 1990/01 (21) Application number: 88901957.0 (22) Date of filing: 12.02.1988

(51) International Patent Classification (IPC):  D21C 9/ 16( . ) (86) International application number: PCT/SE1988/000055 (87) International publication number: WO 1988/006202 (25.08.1988 Gazette 1988/19)

(84) Designated Contracting States: AT CH DE FR GB IT LI SE (30) Priority: 12.02.1987 SE 19870000569 (71) Applicants: KUBAT, Josef S-171 35 Solna (SE) QVIST, Lars Magnus S-448 00 Floda (SE)	(72) Inventors: KUBAT, Josef S-171 35 Solna (SE) QVIST, Lars Magnus S-448 00 Floda (SE) (74) Representative: Halldin, Bo  Dr. Ludwig Brann Patentbyra AB P.O. Box 17192 S-104 62 Stockholm S-104 62 Stockholm (SE)