Document Type and Number:
Japanese Patent JPS4969712
Kind Code:
U
Application Number:
JP11368572U
Publication Date:
June 18, 1974
Filing Date:
September 30, 1972
Export Citation:
International Classes:
E01D19/08; E01D1/00; E04B1/64; E04B1/66; E01D101/00; (IPC1-7): E04B1/66