Document Type and Number:
Japanese Patent JPS5547944
Kind Code:
Y2
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Application Number:
JP5246877U
Publication Date:
November 10, 1980
Filing Date:
April 25, 1977
Export Citation:
International Classes:
E02B17/00; E02D3/12; (IPC1-7): E02B17/00; E02D3/12; E02D21/00