Document Type and Number:
Japanese Patent JPS5243432
Kind Code:
U
Application Number:
JP13090575U
Publication Date:
March 28, 1977
Filing Date:
September 22, 1975
Export Citation:
International Classes:
G03B7/16; G03B15/03; G03B15/05; (IPC1-7): G03B7/08; G03B15/03
Domestic Patent References:
| JP46027257U |