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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH03127329
Kind Code:
U
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Application Number:
JP15289989U
Publication Date:
December 20, 1991
Filing Date:
December 29, 1989
Export Citation:
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International Classes:
G03B17/40; G03B9/08; (IPC1-7): G03B9/08; G03B17/40