(19)
(11)
EP 0 174 964 A1
(12)
(43)
Date of publication:
26.03.1986
Bulletin 1986/13
(21)
Application number:
85901319.0
(22)
Date of filing:
26.03.1985
(51)
International Patent Classification (IPC):
E21F
17/
103
( . )
(86)
International application number:
PCT/AU1985/000060
(87)
International publication number:
WO 1985/004444
(
10.10.1985
Gazette 1985/22)
(84)
Designated Contracting States:
AT BE CH DE FR GB LI LU NL SE
(30)
Priority:
26.03.1984
AU 19840004282
(71)
Applicants:
GEARHART AUSTRALIA LIMITED
Brisbane, QLD 4000 (AU)
TUCKER, Michael Charles
Brisbane, QLD 4061 (AU)
(72)
Inventors:
GEARHART AUSTRALIA LIMITED
Brisbane, QLD 4000 (AU)
TUCKER, Michael Charles
Brisbane, QLD 4061 (AU)
(54)
STOPPINGS