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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4851454
Kind Code:
U
Application Number:
JP9852671U
Publication Date:
July 04, 1973
Filing Date:
October 23, 1971
Export Citation:
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International Classes:
G09B23/06; G03B21/00; (IPC1-7): G09B23/06; G03B21/00



 
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