Document Type and Number:
Japanese Patent JPS5068527
Kind Code:
A
Application Number:
JP11910673A
Publication Date:
June 07, 1975
Filing Date:
October 23, 1973
Export Citation:
International Classes:
G03B19/26; G03B31/02; G03B31/00; (IPC1-7): G03B21/36; G03B31/00
Domestic Patent References:
| JP48047344B |