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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5180144
Kind Code:
U
Application Number:
JP17350275U
Publication Date:
June 25, 1976
Filing Date:
December 22, 1975
Export Citation:
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International Classes:
G02B5/20; G03B11/00; (IPC1-7): G02B5/20; G03B11/00