Document Type and Number:
Japanese Patent JPS5454921
Kind Code:
U
Application Number:
JP13030877U
Publication Date:
April 16, 1979
Filing Date:
September 26, 1977
Export Citation:
International Classes:
E02F3/36; E02F3/42; F16L57/00; (IPC1-7): F16L57/00; E02F3/42