Document Type and Number:
Japanese Patent JPS4954418
Kind Code:
U
Application Number:
JP9690172U
Publication Date:
May 14, 1974
Filing Date:
August 18, 1972
Export Citation:
International Classes:
H04B1/20; G11B5/027; G11B31/00; (IPC1-7): G11B5/027; G11B31/00; H04B1/20