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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS63146877
Kind Code:
U
Application Number:
JP3969087U
Publication Date:
September 28, 1988
Filing Date:
March 18, 1987
Export Citation:
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International Classes:
G09B19/02; (IPC1-7): G09B19/02
Domestic Patent References:
JP58062369B



 
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