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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57112453
Kind Code:
U
Application Number:
JP18980680U
Publication Date:
July 12, 1982
Filing Date:
December 27, 1980
Export Citation:
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International Classes:
H01J29/74; H01J29/80; (IPC1-7): H01J29/74



 
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