Document Type and Number:
Japanese Patent JPS5447309
Kind Code:
U
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Application Number:
JP12117277U
Publication Date:
April 02, 1979
Filing Date:
September 08, 1977
Export Citation:
International Classes:
H04Q3/68; H04Q1/02; H04Q1/04; H04Q1/16; (IPC1-7): H04Q3/68; H04Q1/04