(19)
(11) EP 1 606 489 A1

(12)

(43) Date of publication:
21.12.2005 Bulletin 2005/51

(21) Application number: 04720105.8

(22) Date of filing: 12.03.2004
(51) International Patent Classification (IPC)7E21B 10/56
(86) International application number:
PCT/IB2004/000706
(87) International publication number:
WO 2004/081336 (23.09.2004 Gazette 2004/39)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 14.03.2003 ZA 200302083

(71) Applicant: ELEMENT SIX (PTY) LTD
1559 Springs (ZA)

(72) Inventors:
  • ROBERTS, Bronwyn, Annette
    2193 Parkhurst (ZA)
  • DAVIES, Geoffrey, John
    2194 Randburg (ZA)
  • ACHILLES, Roy, Derrick
    2007 Bedfordview (ZA)

(74) Representative: Johnstone, Helen Margaret 
Eric Potter Clarkson Park View House 58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB)

   


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