(19)

(11)

EP 0 642 393 A1

(12)

(43) Date of publication: 15.03.1995 Bulletin 1995/11 (21) Application number: 92922089.0 (22) Date of filing: 06.10.1992

(51) International Patent Classification (IPC):  A61L 2/ 20( . ) A61L 12/ 12( . ) G02C 13/ 00( . ) A61L 11/ 00( . ) B08B 3/ 10( . ) (86) International application number: PCT/US1992/008720 (87) International publication number: WO 1993/006948 (15.04.1993 Gazette 1993/10)

(84) Designated Contracting States: DE FR GB IE IT NL (30) Priority: 08.10.1991 US 19910774047 30.09.1992 US 19920954966 30.09.1992 US 19920954968 30.09.1992 US 19920954978 30.09.1992 US 19920954979 (71) Applicant: KEW IMPORT/EXPORT INC. Tucson, AZ 85718 (US)	(72) Inventor: LANGFORD, Terrence, R. Tucson, AZ 85718 (US) (74) Representative: Williams, John Francis, et al  WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB London WC2E 7PB (GB)