Document Type and Number:
Japanese Patent JPS4976628
Kind Code:
U
Application Number:
JP12068172U
Publication Date:
July 03, 1974
Filing Date:
October 19, 1972
Export Citation:
International Classes:
G03B21/64; G03B31/00; G03B31/06; (IPC1-7): G03B31/00; G03B21/64
Domestic Patent References:
| JPS4211182Y1 |