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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS63178890
Kind Code:
U
Application Number:
JP7110087U
Publication Date:
November 18, 1988
Filing Date:
May 13, 1987
Export Citation:
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International Classes:
G02B6/04; G09F13/00; (IPC1-7): G09F13/00; G02B6/04
Domestic Patent References:
JP50087890B
JP49138791B



 
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