Document Type and Number:
Japanese Patent JPH02140096
Kind Code:
U
Application Number:
JP5081289U
Publication Date:
November 22, 1990
Filing Date:
April 27, 1989
Export Citation:
International Classes:
F16L33/02; F16L35/00; F16L57/00; (IPC1-7): F16L35/00; F16L33/02; F16L57/00
Domestic Patent References:
JP60131788B | ||||
JPS6245497B2 | 1987-09-28 | |||
JPS503133B1 | 1975-01-31 | |||
JPS5134019B1 | 1976-09-24 |