Document Type and Number:
Japanese Patent JPS4812164
Kind Code:
Y1
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Application Number:
JP6721269U
Publication Date:
April 02, 1973
Filing Date:
July 16, 1969
Export Citation:
International Classes:
E02F3/815; E02F3/76; E02F9/28; (IPC1-7): E02F3/76; E02F9/28