(19)

(11)

EP 0 181 726 A3

(12)	EUROPEAN PATENT APPLICATION

(88) Date of publication A3: 16.09.1987 Bulletin 1987/38 (43) Date of publication A2: 21.05.1986 Bulletin 1986/21 (21) Application number: 85307772 (22) Date of filing: 28.10.1985

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 29.10.1984 GB 8427343 (71) Applicant: DRG (UK) LIMITED  ()	(72) Inventor: Offer, David Henry  ()