Document Type and Number:
Japanese Patent JPS50119506
Kind Code:
A
Application Number:
JP2376274A
Publication Date:
September 19, 1975
Filing Date:
March 02, 1974
Export Citation:
International Classes:
H04H20/62; H04H20/82; H04H60/04; H04R27/00; H04H7/00; (IPC1-7): H04R27/00
Domestic Patent References:
| JPS436495Y1 | 1968-03-23 |