(19)
(11)
EP 0 357 600 A1
(12)
(43)
Date of publication:
14.03.1990
Bulletin 1990/11
(21)
Application number:
87906379.0
(22)
Date of filing:
21.09.1987
(51)
International Patent Classification (IPC):
G11B
23/
087
( . )
(86)
International application number:
PCT/AU1987/000321
(87)
International publication number:
WO 1988/008196
(
20.10.1988
Gazette 1988/23)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE
(30)
Priority:
13.04.1987
AU 19870001411
(71)
Applicant:
WOODBURY, John Michael
Southport, QLD 4161 (AU)
(72)
Inventor:
WOODBURY, John Michael
Southport, QLD 4161 (AU)
(74)
Representative:
Patentanwälte Wenzel & Kalkoff
Postfach 73 04 66, Grubesallee 26
D-22124 Hamburg
D-22124 Hamburg (DE)
(54)
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