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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5533219
Kind Code:
B2
Application Number:
JP10561374A
Publication Date:
August 29, 1980
Filing Date:
September 12, 1974
Export Citation:
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International Classes:
H04H20/10; H04H20/59; H04H20/76; H04H20/83; H04H60/04; H04R27/00



 
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