(19)

(11)

EP 0 125 071 A3

(12)	EUROPEAN PATENT APPLICATION

(88) Date of publication A3: 18.09.1985 Bulletin 1985/38 (43) Date of publication A2: 14.11.1984 Bulletin 1984/46 (21) Application number: 84302802 (22) Date of filing: 26.04.1984

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 28.04.1983 GB 8311620 (71) Applicant: PORTER-LANCASTRIAN LIMITED  ()	(72) Inventors: Porter, Thomas  () Beaumont, Harold  () Lewis, William Alfred Laurie  ()