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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5219723
Kind Code:
B2
Application Number:
JP8286471A
Publication Date:
May 30, 1977
Filing Date:
October 21, 1971
Export Citation:
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International Classes:
H04M1/70; H04M3/16; H04Q5/16; (IPC1-7): H04M1/70; H04Q5/16