Document Type and Number:
Japanese Patent JPS5110097
Kind Code:
B1
Application Number:
JP10519573A
Publication Date:
April 01, 1976
Filing Date:
September 16, 1973
Export Citation:
International Classes:
G03B7/00; G03B7/099; (IPC1-7): G03B7/00
Domestic Patent References:
| JPS4222340Y1 | 1967-12-20 |