Document Type and Number:
Japanese Patent JPS5529487
Kind Code:
U
Application Number:
JP11334278U
Publication Date:
February 26, 1980
Filing Date:
August 17, 1978
Export Citation:
International Classes:
G10K15/04; G08B21/00; G08B23/00; G10K9/12; (IPC1-7): G10K9/12; G08B21/00