Document Type and Number:
Japanese Patent JPH0558118
Kind Code:
B2
Inventors:
MYAKE MASAO
Application Number:
JP15946286A
Publication Date:
August 25, 1993
Filing Date:
July 07, 1986
Export Citation:
Assignee:
MARUGO KISO KOGYO KK
International Classes:
E21B1/04; E21B1/00; E21B11/00; E21B11/04; E21D1/04; (IPC1-7): E21B11/00; E21B11/04; E21D1/04