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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS471144
Kind Code:
U
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Application Number:
JP113471U
Publication Date:
August 11, 1972
Filing Date:
January 16, 1971
Export Citation:
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International Classes:
G09B7/06; G03B31/00; G03B31/06; (IPC1-7): G03B31/00; G09B7/06



 
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