(19)

(11)

EP 0 163 645 A1

(12)

(43) Date of publication: 11.12.1985 Bulletin 1985/50 (21) Application number: 84900632.0 (22) Date of filing: 03.02.1984

(51) International Patent Classification (IPC):  A61C 19/ 04( . ) G01F 23/ 292( . ) G01B 11/ 22( . ) G01N 21/ 85( . ) (86) International application number: PCT/GB1984/000029 (87) International publication number: WO 1984/003143 (16.08.1984 Gazette 1984/20)

(84) Designated Contracting States: BE CH DE FR LI NL SE (30) Priority: 03.02.1983 GB 19830002972 23.11.1983 GB 19830031271 (71) Applicant: LJS PRACTICE MANAGEMENT LIMITED Middlesex HA7 4LX (GB)	(72) Inventor: SIMON, Lewis, Arnold Stanmore, Middlesex HA7 4LX (GB)