(19)

(11)

EP 0 495 874 A1

(12)

(43) Date of publication: 29.07.1992 Bulletin 1992/31 (21) Application number: 90915543.0 (22) Date of filing: 02.10.1990

(51) International Patent Classification (IPC):  H01S 5/ 0687( . ) H01S 5/ 0683( . ) (86) International application number: PCT/SE1990/000633 (87) International publication number: WO 1991/006141 (02.05.1991 Gazette 1991/10)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 13.10.1989 SE 19890003363 (71) Applicant: MARTIN, Hans S-820 60 Delsbo (SE)	(72) Inventor: MARTIN, Hans S-820 60 Delsbo (SE) (74) Representative: Lindblom, Erik J.  Flotthamn S-150 23 Enhörna S-150 23 Enhörna (SE)