Document Type and Number:
Japanese Patent JPS5070915
Kind Code:
U
Application Number:
JP11933673U
Publication Date:
June 23, 1975
Filing Date:
October 16, 1973
Export Citation:
International Classes:
G03B19/18; G03B17/00; G03B23/02; (IPC1-7): G03B17/00; G03B23/02
Domestic Patent References:
| JP35001292A | ||||
| JP34008486A |