Document Type and Number:
Japanese Patent JPH053527
Kind Code:
Y2
Application Number:
JP7046488U
Publication Date:
January 28, 1993
Filing Date:
May 30, 1988
Export Citation:
International Classes:
E01C3/00; E01D2/02; E01D19/12; (IPC1-7): E01D19/12
Next Patent: JPH053528