Document Type and Number:
Japanese Patent JPH0312802
Kind Code:
Y2
Application Number:
JP6554286U
Publication Date:
March 26, 1991
Filing Date:
April 30, 1986
Export Citation:
International Classes:
E01C3/00; E01C7/32; E01C11/16; (IPC1-7): E01C3/00; E01C11/16
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