(19)

(11)

EP 0 031 848 A1

(12)

(43) Date of publication: 15.07.1981 Bulletin 1981/28 (21) Application number: 80901566.0 (22) Date of filing: 26.06.1980

(51) International Patent Classification (IPC):  G01B 3/ 02( . ) (86) International application number: PCT/US1980/000797 (87) International publication number: WO 1981/000085 (22.01.1981 Gazette 1981/02)

(84) Designated Contracting States: AT CH DE FR GB LI NL (30) Priority: 09.07.1979 US 19790055883 (71) Applicants: FEINGOLD, Irene B. Rochester, NY 14618 (US) FEINGOLD, Stanley Z. Rochester, NY 14618 (US)	(72) Inventors: FEINGOLD, Irene B. Rochester, NY 14618 (US) FEINGOLD, Stanley Z. Rochester, NY 14618 (US)