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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57146498
Kind Code:
U
Application Number:
JP3377381U
Publication Date:
September 14, 1982
Filing Date:
March 10, 1981
Export Citation:
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International Classes:
H04R9/04; H01R4/02; H04R1/06; H04R7/12; H04R9/06; (IPC1-7): H04R9/04; H01R4/02; H04R1/06; H04R7/12; H04R9/06
Domestic Patent References:
JP52119819B