(19)

(11)

EP 0 050 155 A1

(12)

(43) Date of publication: 28.04.1982 Bulletin 1982/17 (21) Application number: 81901254.0 (22) Date of filing: 17.04.1981

(51) International Patent Classification (IPC):  G03B 21/ 11( . ) G03B 21/ 28( . ) (86) International application number: PCT/US1981/000525 (87) International publication number: WO 1981/003075 (29.10.1981 Gazette 1981/25)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 18.04.1980 US 19800141456 (71) Applicant: HEADLEY, James E. Pasadena, CA 91107 (US)	(72) Inventor: HEADLEY, James E. Pasadena, CA 91107 (US) (74) Representative: Lewald, Dietrich, Dipl.-Ing., et al  Patentanwalt Pienzenauerstrasse 2 D-81679 München D-81679 München (DE)