Document Type and Number:
Japanese Patent JPS4865214
Kind Code:
U
Application Number:
JP10934271U
Publication Date:
August 18, 1973
Filing Date:
November 22, 1971
Export Citation:
International Classes:
H04R17/10; G10K9/12; G10K9/122; H01L41/08; H04R3/00; H04R17/00; (IPC1-7): H04R17/00; H01L41/10