(19)

(11)

EP 0 156 801 A1

(12)

(43) Date of publication: 09.10.1985 Bulletin 1985/41 (21) Application number: 83903332.0 (22) Date of filing: 27.09.1983

(51) International Patent Classification (IPC):  G01T 1/ 178( . ) G01T 1/ 38( . ) G01T 1/ 208( . ) (86) International application number: PCT/US1983/001479 (87) International publication number: WO 1985/001584 (11.04.1985 Gazette 1985/09)

(84) Designated Contracting States: CH DE FR LI (71) Applicant: Packard Instrument Company, Inc. Downers Grove, IL 60515 (US)	(72) Inventor: VALENTA, Robert, J. Berkeley, IL 60163 (US) (74) Representative: Waxweiler, Jean, et al  Dennemeyer & Associates Sàrl P.O. Box 1502 L-1015 Luxembourg L-1015 Luxembourg (LU)