Document Type and Number:
Japanese Patent JPS6421493
Kind Code:
U
Application Number:
JP11632387U
Publication Date:
February 02, 1989
Filing Date:
July 28, 1987
Export Citation:
International Classes:
G08B5/00; G08B19/00; G08B23/00; (IPC1-7): G08B19/00; G08B5/00; G08B23/00
Domestic Patent References:
| JPS5746956B2 | 1982-10-06 | |||
| JPS5933593A | 1984-02-23 |