Document Type and Number:
Japanese Patent JPS5018202
Kind Code:
U
Application Number:
JP7003573U
Publication Date:
February 28, 1975
Filing Date:
June 15, 1973
Export Citation:
International Classes:
G11B3/00; H04R5/00; H04R5/04; H04S1/00; H04S7/00; (IPC1-7): H04R5/00