Document Type and Number:
Japanese Patent JPS5243128
Kind Code:
Y2
Application Number:
JP8525173U
Publication Date:
September 30, 1977
Filing Date:
July 20, 1973
Export Citation:
International Classes:
E04B1/38; E01B9/00; E01B9/64; E04B1/58; E21D9/06; E21F13/02; (IPC1-7): E04B1/40; E01B9/00; E21D9/06