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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH03122371
Kind Code:
U
Application Number:
JP2991890U
Publication Date:
December 13, 1991
Filing Date:
March 23, 1990
Export Citation:
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International Classes:
G01R31/26; G01R1/06; G01R1/073; G01R31/28; (IPC1-7): G01R1/073; G01R31/26; G01R31/28
Domestic Patent References:
JPH01128381A1989-05-22
JPH01120838A1989-05-12
JPS644042A1989-01-09
JPH01108738A1989-04-26



 
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