Document Type and Number:
Japanese Patent JPS5119782
Kind Code:
B1
Application Number:
JP5563271A
Publication Date:
June 19, 1976
Filing Date:
July 27, 1971
Export Citation:
International Classes:
G03B23/04; G03B23/00; (IPC1-7): G03B23/00
Domestic Patent References:
| JP39022088A |