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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH023538
Kind Code:
U
Application Number:
JP8219688U
Publication Date:
January 10, 1990
Filing Date:
June 21, 1988
Export Citation:
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International Classes:
G03G21/20; G03B27/52; G03D13/00; G03G15/00; G03G21/00; (IPC1-7): G03B27/52; G03D13/00; G03G15/00