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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0316881
Kind Code:
Y2
Application Number:
JP8689086U
Publication Date:
April 10, 1991
Filing Date:
June 06, 1986
Export Citation:
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International Classes:
E01C3/00; E01C7/10; E02D3/00; (IPC1-7): E01C3/00