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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5610620
Kind Code:
U
Application Number:
JP9102379U
Publication Date:
January 29, 1981
Filing Date:
July 02, 1979
Export Citation:
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International Classes:
G03B21/00; G03B23/02; (IPC1-7): G03B21/00; G03B23/02