(19)

(11)

EP 0 866 975 A1

(12)

(43) Date of publication: 30.09.1998 Bulletin 1998/40 (21) Application number: 96944754.0 (22) Date of filing: 05.12.1996

(51) International Patent Classification (IPC):  G01R 15/ 24( . ) G01R 19/ 00( . ) G01R 1/ 07( . ) (86) International application number: PCT/US1996/019346 (87) International publication number: WO 1997/022012 (19.06.1997 Gazette 1997/26)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 08.12.1995 US 19950569338 11.12.1995 US 19950570152 (71) Applicant: Lockheed Idaho Technologies Company Idaho Falls, ID 83425 (US)	(72) Inventors: WOODS, Gregory, K. Idaho Falls, ID 83402 (US) RENAK, Todd, W. Idaho Falls, ID 83401 (US) (74) Representative: Wombwell, Francis  Potts, Kerr & Co. 15, Hamilton Square Birkenhead Merseyside L41 6BR Birkenhead Merseyside L41 6BR (GB)