Document Type and Number:
Japanese Patent JPS6381907
Kind Code:
U
Application Number:
JP17688586U
Publication Date:
May 30, 1988
Filing Date:
November 18, 1986
Export Citation:
International Classes:
E01C1/04; E01C9/08; E01D15/12; E01D15/127; E01D15/133; (IPC1-7): E01D15/12; E01C1/04; E01C9/08