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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57100378
Kind Code:
U
Application Number:
JP10380081U
Publication Date:
June 21, 1982
Filing Date:
July 15, 1981
Export Citation:
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International Classes:
H04Q3/64; (IPC1-7): H04Q3/64
Domestic Patent References:
JPS51113517A1976-10-06