Document Type and Number:
Japanese Patent JPS5255355
Kind Code:
U
Application Number:
JP14138575U
Publication Date:
April 21, 1977
Filing Date:
October 16, 1975
Export Citation:
International Classes:
G10B3/12; G09B15/08; (IPC1-7): G09B15/08
Domestic Patent References:
| JP45008828A |