Document Type and Number:
Japanese Patent JPS5072219
Kind Code:
U
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Application Number:
JP12634373U
Publication Date:
June 25, 1975
Filing Date:
October 31, 1973
Export Citation:
International Classes:
H04R1/00; G11B33/12; H04R1/02; (IPC1-7): H04R1/02
Domestic Patent References:
| JPS365703Y1 | ||||
| JP43000078A |