Document Type and Number:
Japanese Patent JPS5447307
Kind Code:
U
Application Number:
JP12083077U
Publication Date:
April 02, 1979
Filing Date:
September 07, 1977
Export Citation:
International Classes:
H04M1/21; (IPC1-7): H04M1/21
Domestic Patent References:
| JPS522690A | 1977-01-10 |