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Document Type and Number:
Japanese Patent JPH02131260
Kind Code:
U
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Application Number:
JP3962389U
Publication Date:
October 31, 1990
Filing Date:
April 05, 1989
Export Citation:
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International Classes:
H01J61/30; H01J61/36; H01J61/68; (IPC1-7): H01J61/30; H01J61/36



 
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