(19)
(11)
EP 0 436 595 A1
(12)
(43)
Date of publication:
17.07.1991
Bulletin 1991/29
(21)
Application number:
89910684.0
(22)
Date of filing:
13.09.1989
(51)
International Patent Classification (IPC):
E01C
19/
50
( . )
E04F
21/
05
( . )
(86)
International application number:
PCT/SE1989/000495
(87)
International publication number:
WO 1990/003478
(
05.04.1990
Gazette 1990/08)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI NL SE
(30)
Priority:
29.09.1988
SE 19880003453
29.11.1988
SE 19880004324
(71)
Applicant:
WESTHED, Pell Sune
S-795 00 Rättvik (SE)
(72)
Inventor:
WESTHED, Pell Sune
S-795 00 Rättvik (SE)
(74)
Representative:
Mrazek, Werner, et al
Dr. Ludwig Brann Patentbyra AB P.O. Box 1344
S-751 43 Uppsala
S-751 43 Uppsala (SE)
(54)
METHOD AND APPARATUS FOR FORMING A PATH FOR A SCREEDING MEANS