Document Type and Number:
Japanese Patent JPS5072237
Kind Code:
U
Application Number:
JP12614173U
Publication Date:
June 25, 1975
Filing Date:
October 31, 1973
Export Citation:
International Classes:
G03B19/18; G03B17/02; G03B31/00; (IPC1-7): G03B17/02; G03B31/00
Domestic Patent References:
| JPS4814417U | 1973-02-17 |