(19)

(11)

EP 0 243 491 A1

(12)

(43) Date of publication: 04.11.1987 Bulletin 1987/45 (21) Application number: 87900353.0 (22) Date of filing: 31.07.1986

(51) International Patent Classification (IPC):  H03K 17/ 968( . ) (86) International application number: PCT/US1986/001589 (87) International publication number: WO 1987/002529 (23.04.1987 Gazette 1987/09)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 18.10.1985 US 19850789268 (71) Applicant: RADICE, Peter F. King of Prussia, PA 19406 (US)	(72) Inventor: RADICE, Peter F. King of Prussia, PA 19406 (US)