Document Type and Number:
Japanese Patent JPS50105813
Kind Code:
U
Application Number:
JP1553374U
Publication Date:
August 30, 1975
Filing Date:
February 08, 1974
Export Citation:
International Classes:
G09B5/06; G03B31/06; G09B19/06; G11B19/00; G11B19/20; G11B23/30; (IPC1-7): G09B19/06; G11B19/20
Domestic Patent References:
| JP48071809B |