(19)

(11)

EP 0 072 811 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82900397.0 (22) Date of filing: 26.01.1982

(51) International Patent Classification (IPC):  B24B 3/ 00( . ) (86) International application number: PCT/SE1982/000020 (87) International publication number: WO 1982/002507 (05.08.1982 Gazette 1982/19)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL (30) Priority: 26.01.1981 SE 19810000442 (71) Applicant: THE ESTATE OF HÖGFORS, Hans Frederik Birger (deceased) S-114 56 Stockholm (SE)