Document Type and Number:
Japanese Patent JPS5533239
Kind Code:
B1
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Application Number:
JP879071A
Publication Date:
August 29, 1980
Filing Date:
February 23, 1971
Export Citation:
International Classes:
G11B3/02; H04R11/12; (IPC1-7): H04R11/12; G11B3/02
Domestic Patent References:
| JP43023881A |