Document Type and Number:
Japanese Patent JPH0214705
Kind Code:
Y2
Application Number:
JP18645184U
Publication Date:
April 20, 1990
Filing Date:
December 07, 1984
Export Citation:
International Classes:
E21D9/13; E21D9/06; F16L1/00; F16L1/024; F16L37/00; F16L39/00; (IPC1-7): F16L1/00; F16L1/02; E21D9/06; F16L1/024
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