(19)

(11)

EP 0 148 184 A1

(12)

(43) Date of publication: 17.07.1985 Bulletin 1985/29 (21) Application number: 84900669.0 (22) Date of filing: 10.01.1984

(51) International Patent Classification (IPC):  G01R 33/ 28( . ) (86) International application number: PCT/US1984/000020 (87) International publication number: WO 1984/002643 (19.07.1984 Gazette 1984/17)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 10.01.1983 US 19830456555 25.01.1983 US 19830460889 (71) Applicant: GORDON, Robert Thomas Skokie IL 60077 (US)	(72) Inventor: GORDON, Robert Thomas Skokie IL 60077 (US)