(19)

(11)

EP 0 875 052 A1

(12)

(43) Date of publication: 04.11.1998 Bulletin 1998/45 (21) Application number: 97913901.0 (22) Date of filing: 30.10.1997

(51) International Patent Classification (IPC):  G01R 15/ 18( . ) H01F 30/ 16( . ) (86) International application number: PCT/US1997/019736 (87) International publication number: WO 1998/020468 (14.05.1998 Gazette 1998/19)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.11.1996 US 19960742466 (71) Applicant: FOSTER-MILLER ASSOCIATES, INC. Waltham, MA 02154 (US)	(72) Inventors: WIESMAN, Richard, M. Wayland, MA 01778 (US) MASON, Timothy, J. Uxbridge, MA 01569 (US) BASTARACHE, Gary, R. Athol, MA 01331 (US) (74) Representative: Jones, Graham H.  Graham Jones & Company 77 Beaconsfield Road Blackheath London SE3 7LG London SE3 7LG (GB)