Document Type and Number:
Japanese Patent JPS4417640
Kind Code:
Y1
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Application Number:
JP308568U
Publication Date:
July 30, 1969
Filing Date:
January 18, 1968
Export Citation:
International Classes:
B21C37/26; B21C37/22; E04C3/32; E04H12/08; (IPC1-7): B21C37/22; E04C3/32; E04H12/08