Document Type and Number:
Japanese Patent JPS5319796
Kind Code:
Y2
Application Number:
JP14385874U
Publication Date:
May 25, 1978
Filing Date:
November 26, 1974
Export Citation:
International Classes:
G03B21/64; G03B21/00; G03B21/04; G03B31/00; G03B31/06; G11B23/44; G11B25/04; (IPC1-7): G03B31/00; G11B25/04