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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4968420
Kind Code:
U
Application Number:
JP11167372U
Publication Date:
June 14, 1974
Filing Date:
September 26, 1972
Export Citation:
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International Classes:
H04R1/00; G03B31/00; (IPC1-7): G03B31/00; H04R1/00
Domestic Patent References:
JPS42966Y11967-01-20
JPS319209Y1



 
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