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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5349396
Kind Code:
Y2
Application Number:
JP4902373U
Publication Date:
November 27, 1978
Filing Date:
April 24, 1973
Export Citation:
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International Classes:
G03B7/20; G03B17/18; G03B17/20; (IPC1-7): G03B17/18; G03B7/20