Document Type and Number:
Japanese Patent JPS5140347
Kind Code:
U
Application Number:
JP11367274U
Publication Date:
March 25, 1976
Filing Date:
September 20, 1974
Export Citation:
International Classes:
G03B19/18; G03B17/00; G03B17/56; G03B31/00; (IPC1-7): G03B31/00; G03B17/00; G03B17/56
Domestic Patent References:
| JPS3527664Y1 |