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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS548674
Kind Code:
Y2
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Application Number:
JP11076472U
Publication Date:
April 20, 1979
Filing Date:
September 22, 1972
Export Citation:
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International Classes:
H01J7/24; H01J23/00; H01J23/20; H01J25/50; H01J25/55; (IPC1-7): H01J23/00; H01J25/55



 
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