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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH02106004
Kind Code:
U
Application Number:
JP1476689U
Publication Date:
August 23, 1990
Filing Date:
February 10, 1989
Export Citation:
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International Classes:
E01C3/06; E01C7/30; (IPC1-7): E01C3/06; E01C7/30
Domestic Patent References:
JPS5949361B21984-12-03
JPS63268803A1988-11-07