(19)

(11)

EP 0 188 592 A1

(12)

(43) Date of publication: 30.07.1986 Bulletin 1986/31 (21) Application number: 85903873.0 (22) Date of filing: 30.07.1985

(51) International Patent Classification (IPC):  G01B 11/ 27( . ) H01S 3/ 101( . ) H01S 3/ 00( . ) (86) International application number: PCT/IT1985/000025 (87) International publication number: WO 1986/000982 (13.02.1986 Gazette 1986/04)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 31.07.1984 IT 19840022137 (71) Applicant: PALA LUSSORIO, Rinaldo I-20133 Milan (IT)	(72) Inventor: PALA LUSSORIO, Rinaldo I-20133 Milan (IT)