(19)

(11)

EP 0 029 261 A3

(12)	EUROPEAN PATENT APPLICATION

(88) Date of publication A3: 04.11.1981 Bulletin 1981/44 (43) Date of publication A2: 27.05.1981 Bulletin 1981/21 (21) Application number: 80200990 (22) Date of filing: 18.10.1980

(84) Designated Contracting States: AT CH DE FR GB IT LI LU NL (30) Priority: 22.10.1979 BE 58146 (71) Applicant: PIROBOUW, Naamloze Vennootschap  ()	(72) Inventor: CIPIN, Jozef  ()