(19)

(11)

EP 0 077 332 A1

(12)

(43) Date of publication: 27.04.1983 Bulletin 1983/17 (21) Application number: 82900524.0 (22) Date of filing: 28.12.1981

(51) International Patent Classification (IPC):  H03K 9/ 08( . ) (86) International application number: PCT/US1981/001757 (87) International publication number: WO 1982/002300 (08.07.1982 Gazette 1982/17)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 29.12.1980 US 19800220689 (71) Applicant: BECKMAN INSTRUMENTS, INC. Fullerton California 92634 (US)	(72) Inventor: MOELLER, Roy P. 4, Hayward, CA (US)