Document Type and Number:
Japanese Patent JPS57131057
Kind Code:
U
Application Number:
JP1707881U
Publication Date:
August 16, 1982
Filing Date:
February 12, 1981
Export Citation:
International Classes:
H04N1/04; (IPC1-7): H04N1/04
Domestic Patent References:
| JPS509626B1 | 1975-04-14 | |||
| JPS5013885A | 1975-02-13 |