Document Type and Number:
Japanese Patent JPS4421911
Kind Code:
Y1
Application Number:
JP4861166U
Publication Date:
September 16, 1969
Filing Date:
May 24, 1966
Export Citation:
International Classes:
E01D15/12; A62B3/00; E01D2/00; (IPC1-7): A62B3/00; E01D15/12