Document Type and Number:
Japanese Patent JPS5616802
Kind Code:
B2
Application Number:
JP7792076A
Publication Date:
April 18, 1981
Filing Date:
July 02, 1976
Export Citation:
International Classes:
G01V9/02; E02B11/00; E02D3/10; E02D7/02; E02D17/20; E02D19/10