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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0218259
Kind Code:
U
Application Number:
JP9558988U
Publication Date:
February 06, 1990
Filing Date:
July 19, 1988
Export Citation:
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International Classes:
H01J29/89; H01J7/26; H01J31/10; (IPC1-7): H01J29/89; H01J7/26; H01J31/10



 
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