Document Type and Number:
Japanese Patent JPS6231475
Kind Code:
Y2
Application Number:
JP13250681U
Publication Date:
August 12, 1987
Filing Date:
September 04, 1981
Export Citation:
International Classes:
E02F9/00; E02F3/64; F15B11/00; F16L37/00; F16L39/00; (IPC1-7): E02F9/00; F16L39/00