(19)

(11)

EP 0 109 410 A1

(12)

(43) Date of publication: 30.05.1984 Bulletin 1984/22 (21) Application number: 83901498.0 (22) Date of filing: 21.03.1983

(51) International Patent Classification (IPC):  B04B 9/ 12( . ) B04B 9/ 14( . ) (86) International application number: PCT/US1983/000402 (87) International publication number: WO 1983/003985 (24.11.1983 Gazette 1983/27)

(84) Designated Contracting States: CH DE GB LI (30) Priority: 19.05.1982 US 19820379672 (71) Applicant: BECKMAN INSTRUMENTS, INC. Fullerton California 92634 (US)	(72) Inventors: JACOBSON, Kenneth E. Fremont, CA 94538 (US) INOUYE, Kenneth K. Redwood City, CA 94061 (US) (74) Representative: Wotherspoon, Graham, et al  FITZPATRICKS 4 West Regent Street Glasgow G2 1RS Scotland Glasgow G2 1RS Scotland (GB)