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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5219560
Kind Code:
B2
Application Number:
JP9093772A
Publication Date:
May 28, 1977
Filing Date:
September 12, 1972
Export Citation:
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International Classes:
C01B33/157; B01J20/10; C01B33/16; (IPC1-7): C01B33/16



 
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