Document Type and Number:
Japanese Patent JPS4969714
Kind Code:
U
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Application Number:
JP11374772U
Publication Date:
June 18, 1974
Filing Date:
September 30, 1972
Export Citation:
International Classes:
E01F8/00; E01B19/00; E01C1/00; E04B1/82; E04B1/84; E04B1/86; E04C2/30; (IPC1-7): E04B1/82; E04C2/30