Document Type and Number:
Japanese Patent JPS49133626
Kind Code:
U
Application Number:
JP3187773U
Publication Date:
November 16, 1974
Filing Date:
March 15, 1973
Export Citation:
International Classes:
G03B31/06; G03B21/132; G03B31/00; G11B23/50; G11B31/00; (IPC1-7): G03B31/00; G03B21/132; G11B23/50; G11B31/00