Document Type and Number:
Japanese Patent JPS6457491
Kind Code:
U
Application Number:
JP15213887U
Publication Date:
April 10, 1989
Filing Date:
October 06, 1987
Export Citation:
International Classes:
F16L37/00; F16L37/08; F16L37/22; F16L37/28; (IPC1-7): F16L37/00