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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0446655
Kind Code:
B2
Inventors:
SUGIO EIJI
NAKAMURA MASAHITO
TANIGAWA MASAKAZU
Application Number:
JP13087187A
Publication Date:
July 30, 1992
Filing Date:
May 27, 1987
Export Citation:
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Assignee:
SHOWA ALUMINIUM CO LTD
International Classes:
B21C23/10; B21C23/14; B21C25/02