(19)
(11)
EP 0 904 166 A1
(12)
(43)
Date of publication:
31.03.1999
Bulletin 1999/13
(21)
Application number:
97918434.0
(22)
Date of filing:
24.04.1997
(51)
International Patent Classification (IPC):
B21B
28/
04
( . )
B24B
5/
16
( . )
(86)
International application number:
PCT/NO1997/000108
(87)
International publication number:
WO 1997/039844
(
30.10.1997
Gazette 1997/46)
(84)
Designated Contracting States:
AT DE ES FR GB IT
(30)
Priority:
25.04.1996
NO 19960001668
(71)
Applicant:
Berg, Gisela E.
1370 Asker (NO)
(72)
Inventor:
Berg, Gisela E.
1370 Asker (NO)
(74)
Representative:
Hitchcock, Esmond Antony
Lloyd Wise, Tregear & Co., Commonwealth House, 1-19 New Oxford Street
London WC1A 1LW
London WC1A 1LW (GB)
(54)
METHOD AND SYSTEM FOR THE MAINTENANCE OF SURFACES