Document Type and Number:
Japanese Patent JPH028811
Kind Code:
B2
Inventors:
MORITA JIRO
Application Number:
JP19571687A
Publication Date:
February 27, 1990
Filing Date:
August 04, 1987
Export Citation:
Assignee:
RIKEN HATSUJO KOGYO KK
International Classes:
B21D11/06; B21F3/027
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