Document Type and Number:
Japanese Patent JPS5712483
Kind Code:
U
Application Number:
JP8607680U
Publication Date:
January 22, 1982
Filing Date:
June 19, 1980
Export Citation:
International Classes:
E03F3/04; E02B11/00; F16L33/00; F16L33/28; (IPC1-7): E03F3/04; E02B11/00; F16L33/00
Domestic Patent References:
| JP48114257B | ||||
| JP51135929B |