Document Type and Number:
Japanese Patent JPS5254285
Kind Code:
Y2
Application Number:
JP5666175U
Publication Date:
December 08, 1977
Filing Date:
April 25, 1975
Export Citation:
International Classes:
H01L23/48; H01L23/06; H01L23/12; H01L23/29; H01L23/31; (IPC1-7): H01L23/06; H01L23/12