(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)7E21B 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