Document Type and Number:
Japanese Patent JPS50102307
Kind Code:
U
Application Number:
JP1157374U
Publication Date:
August 23, 1975
Filing Date:
January 26, 1974
Export Citation:
International Classes:
G03B31/00; G11B15/00; G11B15/02; G11B31/00; (IPC1-7): G03B31/00; G11B15/00
Domestic Patent References:
| JP40018247A |