Document Type and Number:
Japanese Patent JPH0426796
Kind Code:
Y2
Application Number:
JP10108689U
Publication Date:
June 26, 1992
Filing Date:
August 31, 1989
Export Citation:
International Classes:
F16L39/04; G21B1/11; G21B1/17; (IPC1-7): F16L39/04
Next Patent: JPH0426797