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Document Type and Number:
Japanese Patent JPS5537890
Kind Code:
B2
Application Number:
JP7947875A
Publication Date:
October 01, 1980
Filing Date:
June 27, 1975
Export Citation:
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International Classes:
H04J1/08; H03C1/60; H04J1/05; H04J4/00; H04L27/04



 
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