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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS55108652
Kind Code:
U
Application Number:
JP666779U
Publication Date:
July 30, 1980
Filing Date:
January 24, 1979
Export Citation:
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International Classes:
H01J31/46; H01J29/38; H01J29/44; H01J31/56; (IPC1-7): H01J31/46; H01J29/44; H01J31/56