Document Type and Number:
Japanese Patent JPH0248503
Kind Code:
Y2
Application Number:
JP572385U
Publication Date:
December 19, 1990
Filing Date:
January 18, 1985
Export Citation:
International Classes:
E02D3/10; E02B11/00; F16L37/00; F16L39/00; (IPC1-7): E02B11/00; E02D3/10; F16L39/00
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