Document Type and Number:
Japanese Patent JPS531220
Kind Code:
Y2
Application Number:
JP11775674U
Publication Date:
January 14, 1978
Filing Date:
October 01, 1974
Export Citation:
International Classes:
E04G17/065; E04G13/04; E04G17/06; (IPC1-7): E04G17/08; E04B1/40
Next Patent: JPH0531221