Document Type and Number:
Japanese Patent JPS50105133
Kind Code:
A
Application Number:
JP1131174A
Publication Date:
August 19, 1975
Filing Date:
January 26, 1974
Export Citation:
International Classes:
G03B23/02; G11B23/06; G11B23/42; (IPC1-7): G03B23/02; G11B23/06