(19)

(11)

EP 0 691 019 A1

(12)

(43) Date of publication: 10.01.1996 Bulletin 1996/02 (21) Application number: 93907679.0 (22) Date of filing: 17.03.1993

(51) International Patent Classification (IPC):  G10K 15/ 04( . ) G10H 1/ 36( . ) G10H 1/ 20( . ) (86) International application number: PCT/CA1993/000099 (87) International publication number: WO 1994/022130 (29.09.1994 Gazette 1994/22)

(84) Designated Contracting States: DE DK FR GB IT NL (71) Applicant: IVL TECHNOLOGIES LTD. Victoria, British Columbia V8N 5H5 (CA)	(72) Inventors: GIBSON, Brian, C. Victoria, British Columbia V8N 5H5 (CA) BERTSCH, John, P. Victoria, British Columbia V9C 3H5 (CA) (74) Representative: Spall, Christopher John  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)