Document Type and Number:
Japanese Patent JPH02145896
Kind Code:
U
Application Number:
JP4854590U
Publication Date:
December 11, 1990
Filing Date:
May 11, 1990
Export Citation:
International Classes:
H04R9/00; H04R11/02; H04R23/00; (IPC1-7): H04R9/00
Domestic Patent References:
| JPS5151928A | 1976-05-07 | |||
| JPS583696U | 1983-01-11 |