Document Type and Number:
Japanese Patent JPS4810443
Kind Code:
U
Application Number:
JP5162071U
Publication Date:
February 05, 1973
Filing Date:
June 18, 1971
Export Citation:
International Classes:
G03B31/06; G03B31/00; (IPC1-7): G03B31/00
Domestic Patent References:
| JPS397058Y1 |