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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5726859
Kind Code:
U
Application Number:
JP10288180U
Publication Date:
February 12, 1982
Filing Date:
July 21, 1980
Export Citation:
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International Classes:
G02B5/20; H01L31/02; H01L31/0232; (IPC1-7): H01L31/02; G02B5/20