(19)
(11)
EP 0 383 801 A1
(12)
(43)
Date of publication:
29.08.1990
Bulletin 1990/35
(21)
Application number:
88909215.0
(22)
Date of filing:
19.10.1988
(51)
International Patent Classification (IPC):
B25J
18/
00
( . )
E01D
19/
14
( . )
E04C
3/
22
( . )
E01D
11/
02
( . )
E04B
1/
32
( . )
(86)
International application number:
PCT/GB1988/000891
(87)
International publication number:
WO 1989/003921
(
05.05.1989
Gazette 1989/10)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE
(30)
Priority:
19.10.1987
GB 19870024453
(71)
Applicant:
The British Petroleum Company p.l.c.
London EC2Y 9BU (GB)
(72)
Inventor:
PARKHOUSE, John, Graham
Epsom Surrey KT19 8SG (GB)
(74)
Representative:
Senior, Alan Murray
J.A. KEMP & CO., 14 South Square, Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)
(54)
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