Document Type and Number:
Japanese Patent JPS4930290
Kind Code:
A
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Application Number:
JP6997472A
Publication Date:
March 18, 1974
Filing Date:
July 14, 1972
Export Citation:
International Classes:
B01D53/50; B01D53/52; B01D53/77; C01B17/04; C10K1/10; C10K1/12