Document Type and Number:
Japanese Patent JPS5391023
Kind Code:
U
Application Number:
JP17419376U
Publication Date:
July 25, 1978
Filing Date:
December 27, 1976
Export Citation:
International Classes:
F16L27/04; E21B17/00; E21B17/01; E21B33/035; F15B15/14; F16L27/06; F16L37/00; F16L37/12; (IPC1-7): F16L37/12; E21B17/00; F16L27/04