Document Type and Number:
Japanese Patent JPS5094889
Kind Code:
U
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Application Number:
JP447574U
Publication Date:
August 08, 1975
Filing Date:
December 28, 1973
Export Citation:
International Classes:
E01F9/00; E01F9/615; E21F17/18; G08B5/00; G08B5/22; G08G1/09; (IPC1-7): G08B5/22; E01G1/00