Document Type and Number:
Japanese Patent JPS541417
Kind Code:
U
Application Number:
JP7391877U
Publication Date:
January 08, 1979
Filing Date:
June 06, 1977
Export Citation:
International Classes:
H04R17/02; H04R1/04; H04R3/00; H04R3/04; (IPC1-7): H04R17/02; H04R1/04; H04R3/04
Domestic Patent References:
| JPS5014653B1 | 1975-05-29 |
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