Document Type and Number:
Japanese Patent JPH03106220
Kind Code:
U
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Application Number:
JP1284890U
Publication Date:
November 01, 1991
Filing Date:
February 13, 1990
Export Citation:
International Classes:
B21D28/24; B21D28/34; (IPC1-7): B21D28/34; B21D28/24; B21D28/34