(19)

(11)

EP 0 605 661 A1

(12)

(43) Date of publication: 13.07.1994 Bulletin 1994/28 (21) Application number: 93906313.0 (22) Date of filing: 23.09.1992

(51) International Patent Classification (IPC):  A62D 5/ 00( . ) C08L 23/ 28( . ) (86) International application number: PCT/CA1992/000451 (87) International publication number: WO 1993/005846 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: DK NL (30) Priority: 23.09.1991 CA 19912052444 (71) Applicant: HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINISTER OF NATIONAL DEFENCE OF HER MAJESTY'S CANADIAN GOVERNMENT Ottawa, Ontario K1A 0K2 (CA)	(72) Inventors: COLLYER, John, C. Nepean, Ontario K2H 7V2 (CA) CLARK, John, R. Carleton Place, Ontario K7C 3P1 (CA) (74) Representative: Perry, Robert Edward, et al  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)