Document Type and Number:
Japanese Patent JPS4937061
Kind Code:
U
Application Number:
JP7685072U
Publication Date:
April 02, 1974
Filing Date:
June 29, 1972
Export Citation:
International Classes:
H04B5/00; A63B5/00; G10K15/04; (IPC1-7): A63B5/18; G10K10/00; H04B5/00