Document Type and Number:
Japanese Patent JPS56172185
Kind Code:
U
Application Number:
JP6995280U
Publication Date:
December 19, 1981
Filing Date:
May 20, 1980
Export Citation:
International Classes:
G08B19/00; F16J15/16; G08B21/00; (IPC1-7): G08B19/00; F16J15/16; G08B21/00
Domestic Patent References:
| JPS5323316U | 1978-02-27 | |||
| JP50122255B |