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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS52510
Kind Code:
Y2
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Application Number:
JP5846171U
Publication Date:
January 08, 1977
Filing Date:
July 03, 1971
Export Citation:
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International Classes:
G03B21/44; G03B1/00; G03B1/56; G03B23/00; G03B23/12; (IPC1-7): G03B23/00