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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4874500
Kind Code:
A
Application Number:
JP519872A
Publication Date:
October 06, 1973
Filing Date:
January 12, 1972
Export Citation:
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International Classes:
C01G37/027; H01F1/11; C01G37/02; (IPC1-7): C01G37/02



 
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