Document Type and Number:
Japanese Patent JPS5550999
Kind Code:
Y2
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Application Number:
JP9878976U
Publication Date:
November 27, 1980
Filing Date:
July 26, 1976
Export Citation:
International Classes:
H01L23/29; H01L23/04; H01L23/12; H01L23/28; H01L23/31; (IPC1-7): H01L23/28