Document Type and Number:
Japanese Patent JPS4821218
Kind Code:
U
Application Number:
JP6330471U
Publication Date:
March 10, 1973
Filing Date:
July 16, 1971
Export Citation:
International Classes:
F16K39/02; (IPC1-7): F16K39/02
Domestic Patent References:
| JPS4417867Y1 | 1969-08-02 | |||
| JPS4425427Y1 | 1969-10-24 |