Document Type and Number:
Japanese Patent JPS5215836
Kind Code:
U
Application Number:
JP10205575U
Publication Date:
February 04, 1977
Filing Date:
July 22, 1975
Export Citation:
International Classes:
E21D9/087; E02F9/28; E21D9/06; (IPC1-7): E21D9/06; E02F9/28