Document Type and Number:
Japanese Patent JPS4896838
Kind Code:
U
Application Number:
JP2139872U
Publication Date:
November 16, 1973
Filing Date:
February 21, 1972
Export Citation:
International Classes:
G04G3/00; G04C3/00; G04G3/04; H03B5/04; H03B5/32; (IPC1-7): H03B5/04; G04C3/00; H03B5/32
Domestic Patent References:
| JP46040443A | ||||
| JP44009684A |