(19)
(11)
EP 1 076 754 A1
(12)
(43)
Date of publication:
21.02.2001
Bulletin 2001/08
(21)
Application number:
99917743.9
(22)
Date of filing:
04.05.1999
(51)
International Patent Classification (IPC)
7
:
E21B
4/14
(86)
International application number:
PCT/CZ9900/011
(87)
International publication number:
WO 9957/411
(
11.11.1999
Gazette 1999/45)
(84)
Designated Contracting States:
AT DE GB IT
(30)
Priority:
04.05.1998
CZ 136198
(71)
Applicant:
PERMON S.R.O.
270 23 Krivoklát (CS)
(72)
Inventors:
KOUDELKA, Vladimir
270 23 Krivoklát (CZ)
STROS, Jan
269 01 Rakovnik (CZ)
(74)
Representative:
Lyndon-Stanford, Edward Willoughby Brooke et al
MARKS & CLERK,57/60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)
(54)
PNEUMATIC SUBMERSIBLE BORING TOOL