(19)

(11)

EP 0 062 636 A1

(12)

(43) Date of publication: 20.10.1982 Bulletin 1982/42 (21) Application number: 81900835.0 (22) Date of filing: 08.10.1980

(51) International Patent Classification (IPC):  G03C 9/ 00( . ) G03B 21/ 00( . ) G03B 35/ 16( . ) G02B 27/ 22( . ) G03B 35/ 00( . ) G03B 41/ 06( . ) (86) International application number: PCT/US1980/001370 (87) International publication number: WO 1982/001259 (15.04.1982 Gazette 1982/10)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (71) Applicant: THE ZYNTRAX CORPORATION New York, NY 10021 (US)	(72) Inventors: WOLOSHUK, Edward A. New York, NY 10021 (US) WALZ, Gregory J. Pittsburgh, PA 15204 (US) (74) Representative: Bizley, Richard Edward, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)