Document Type and Number:
Japanese Patent JPH0381493
Kind Code:
U
Application Number:
JP14351989U
Publication Date:
August 20, 1991
Filing Date:
December 12, 1989
Export Citation:
International Classes:
F16L37/23; F16L37/22; F16L39/04; (IPC1-7): F16L39/04; F16L37/22
Domestic Patent References:
| JPS6133346U | 1986-02-28 |