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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS56167699
Kind Code:
U
Application Number:
JP5576381U
Publication Date:
December 11, 1981
Filing Date:
April 20, 1981
Export Citation:
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International Classes:
H04R9/12; H04R9/16; H04R11/08; H04R11/12; H04R19/06; H04R19/10; H04R23/00; (IPC1-7): H04R23/00; H04R9/16; H04R11/12; H04R19/10