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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4842530
Kind Code:
Y1
Application Number:
JP3139170U
Publication Date:
December 10, 1973
Filing Date:
March 31, 1970
Export Citation:
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International Classes:
H01J29/54; H01J29/70; (IPC1-7): H01J29/70



 
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