Document Type and Number:
Japanese Patent JPH0251001
Kind Code:
B2
Inventors:
HIRATSUKA TOSHIO
Application Number:
JP5469083A
Publication Date:
November 06, 1990
Filing Date:
March 30, 1983
Export Citation:
Assignee:
HIRATSUKA TOSHIO
International Classes:
E01C5/14; E01C3/00; E01C5/06; E01C15/00