Document Type and Number:
Japanese Patent JPS507528
Kind Code:
A
Application Number:
JP5492973A
Publication Date:
January 25, 1975
Filing Date:
May 17, 1973
Export Citation:
International Classes:
G03B31/00
Domestic Patent References:
| JP40021310A | ||||
| JP43007576A | ||||
| JPS335951Y1 |
Next Patent: JPS507529