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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH03117711
Kind Code:
U
Application Number:
JP2716690U
Publication Date:
December 05, 1991
Filing Date:
March 19, 1990
Export Citation:
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International Classes:
G01B15/00; H01J37/20; H01J37/28; (IPC1-7): G01B15/00



 
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