(19)

(11)

EP 0 112 334 A1

(12)

(43) Date of publication: 04.07.1984 Bulletin 1984/27 (21) Application number: 82902840.0 (22) Date of filing: 30.06.1982

(51) International Patent Classification (IPC):  G01B 11/ 16( . ) G01J 4/ 00( . ) (86) International application number: PCT/US1982/000884 (87) International publication number: WO 1984/000209 (19.01.1984 Gazette 1984/02)

(84) Designated Contracting States: DE FR GB NL SE (71) Applicant: THE BOEING COMPANY Seattle Washington 98124 (US)	(72) Inventor: CLARK, Larry Trumbull Kent, WA 98031 (US) (74) Representative: Hoijtink, Reinoud, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 NL-2517 GK Den Haag NL-2517 GK Den Haag (NL)