Document Type and Number:
Japanese Patent JPH0438251
Kind Code:
Y2
Application Number:
JP15947486U
Publication Date:
September 08, 1992
Filing Date:
October 20, 1986
Export Citation:
International Classes:
E01C23/01; G01B11/30; G01B21/32; G01M5/00; G01S17/88; (IPC1-7): G01B21/32; E01C23/01; G01B11/30; G01M5/00
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