Document Type and Number:
Japanese Patent JPS4822091
Kind Code:
Y1
Application Number:
JP4558370U
Publication Date:
June 27, 1973
Filing Date:
May 12, 1970
Export Citation:
International Classes:
E21D11/00; E21D9/06; E21D11/14; E21D15/00; (IPC1-7): E21D11/00; E21D9/06; E21D15/00