Document Type and Number:
Japanese Patent JPS5025533
Kind Code:
U
Application Number:
JP7762573U
Publication Date:
March 24, 1975
Filing Date:
June 30, 1973
Export Citation:
International Classes:
G03B17/28; G03B1/48; (IPC1-7): G03B1/48
Domestic Patent References:
| JPS394362Y1 | ||||
| JPS3936245Y1 |