(19)

(11)

EP 0 882 238 A1

(12)

(43) Date of publication: 09.12.1998 Bulletin 1998/50 (21) Application number: 97904679.0 (22) Date of filing: 17.02.1997

(51) International Patent Classification (IPC):  G01R 31/ 02( . ) G01R 31/ 08( . ) (86) International application number: PCT/NZ1997/000019 (87) International publication number: WO 1997/031272 (28.08.1997 Gazette 1997/37)

(84) Designated Contracting States: BE DE FR GB SE (30) Priority: 20.02.1996 NZ 19960286026 (71) Applicant: Gallagher Group Limited Hamilton 2001 (NZ)	(72) Inventor: HO, Yit, Moon Cambridge 2351 (NZ) (74) Representative: Wharton, Peter Robert, et al  Urquhart-Dykes & Lord Inventions House Valley Court, Canal Road Bradford BD1 4SP Bradford BD1 4SP (GB)