Document Type and Number:
Japanese Patent JPS4852416
Kind Code:
U
Application Number:
JP9745571U
Publication Date:
July 07, 1973
Filing Date:
October 20, 1971
Export Citation:
International Classes:
H04R1/12; H04M1/17; H04M1/21; (IPC1-7): H04R1/12
Domestic Patent References:
JPS4014881Y1 | ||||
JPS4027603Y1 | ||||
JPS431792Y1 | 1968-01-26 |