Document Type and Number:
Japanese Patent JPS56173285
Kind Code:
U
Application Number:
JP7218080U
Publication Date:
December 21, 1981
Filing Date:
May 26, 1980
Export Citation:
International Classes:
F16L29/00; F16L37/00; F16L37/28; F16L37/40; F16L55/07; (IPC1-7): F16L29/00; F16L37/28; F16L55/07