(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