(19)

(11)

EP 0 195 800 A1

(12)

(43) Date of publication: 01.10.1986 Bulletin 1986/40 (21) Application number: 85904736.0 (22) Date of filing: 13.09.1985

(51) International Patent Classification (IPC):  G01R 29/ 08( . ) G01J 1/ 56( . ) G01H 3/ 10( . ) (86) International application number: PCT/US1985/001755 (87) International publication number: WO 1986/001889 (27.03.1986 Gazette 1986/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 14.09.1984 US 19840650819 (71) Applicant: TAB LEASING N.E. Seattle, WA 98115 (US)	(72) Inventor: NELSON, Craig, E. Seattle, WA 98103 (US) (74) Representative: Arthur, Bryan Edward, et al  Withers & Rogers 4 Dyer's Buildings Holborn London EC1N 2JT London EC1N 2JT (GB)