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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5571559
Kind Code:
U
Application Number:
JP15558478U
Publication Date:
May 16, 1980
Filing Date:
November 10, 1978
Export Citation:
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International Classes:
H01L23/32; H01L23/34; (IPC1-7): H01L23/32; H01L23/34