Document Type and Number:
Japanese Patent JPS509428
Kind Code:
A
Application Number:
JP5688073A
Publication Date:
January 30, 1975
Filing Date:
May 23, 1973
Export Citation:
International Classes:
G03B31/04; G11B31/00
Domestic Patent References:
| JP30000035A | ||||
| JP34001581A |
Next Patent: JPS509429