Document Type and Number:
Japanese Patent JPS566481
Kind Code:
Y2
Application Number:
JP17260375U
Publication Date:
February 13, 1981
Filing Date:
December 20, 1975
Export Citation:
International Classes:
E01C5/06; E01C1/00; E01C7/14; E01C7/32; E01F9/00; E01F9/50; E01F9/506; E01F9/553; (IPC1-7): E01C7/14
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