Document Type and Number:
Japanese Patent JPS4896942
Kind Code:
U
Application Number:
JP2004272U
Publication Date:
November 17, 1973
Filing Date:
February 18, 1972
Export Citation:
International Classes:
H04R9/04; H04R7/12; (IPC1-7): H04R9/04; H04R7/12
Domestic Patent References:
| JPS489132B1 |