Document Type and Number:
Japanese Patent JPS52110831
Kind Code:
U
Application Number:
JP1835076U
Publication Date:
August 23, 1977
Filing Date:
February 20, 1976
Export Citation:
International Classes:
H04R1/02; H04R1/22; (IPC1-7): H04R1/02; H04R1/22
Domestic Patent References:
| JPS4710218U | 1972-10-06 | |||
| JPS4916139U | 1974-02-09 | |||
| JP35006904A |