Document Type and Number:
Japanese Patent JPS541416
Kind Code:
U
Application Number:
JP7250577U
Publication Date:
January 08, 1979
Filing Date:
June 06, 1977
Export Citation:
International Classes:
H04R1/02; G03B31/00; H04R1/08; H04R1/22; (IPC1-7): H04R1/08; G03B31/00; H04R1/22
Domestic Patent References:
| JP45001578A | ||||
| JPS3625403Y1 | ||||
| JPS4736106U | 1972-12-21 | |||
| JPS5223957U | 1977-02-19 |
Next Patent: JPS541417