Title:
CALL CHIME SYSTEM
Document Type and Number:
Japanese Patent JPS57143691
Kind Code:
A
Inventors:
ISOBE YOUICHI
KOJIMA YUTAKA
KOJIMA YUTAKA
Application Number:
JP2885181A
Publication Date:
September 04, 1982
Filing Date:
February 28, 1981
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G08B3/10; G08B25/00; G08B25/01; (IPC1-7): G08B3/10; G08B25/00
Domestic Patent References:
| JP49117705B | ||||
| JPS5164186A | 1976-06-03 |