(19)

(11)

EP 0 050 662 A1

(12)

(43) Date of publication: 05.05.1982 Bulletin 1982/18 (21) Application number: 81901266.0 (22) Date of filing: 28.04.1981

(51) International Patent Classification (IPC):  C12P 7/ 06( . ) (86) International application number: PCT/US1981/000560 (87) International publication number: WO 1981/003182 (12.11.1981 Gazette 1981/27)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 29.04.1980 US 19800144964 (71) Applicant: DELAIR, Charles M. Modesto, CA 95355 (US)	(72) Inventor: DELAIR, Charles M. Modesto, CA 95355 (US) (74) Representative: Allard, Susan Joyce, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)