(19)

(11)

EP 0 075 590 A1

(12)

(43) Date of publication: 06.04.1983 Bulletin 1983/14 (21) Application number: 82901274.0 (22) Date of filing: 29.03.1982

(51) International Patent Classification (IPC):  G01V 8/ 12( . ) G08B 13/ 194( . ) (86) International application number: PCT/US1982/000376 (87) International publication number: WO 1982/003464 (14.10.1982 Gazette 1982/25)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 30.03.1981 US 19810249068 (71) Applicant: BIO/OPTICAL SENSOR PARTNERS, LTD. Sheffield Lake, OH 44054 (US)	(72) Inventor: FRADEN, Jacob Hamden, CT 06514 (US)