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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS4811009
Kind Code:
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Publication Date:
March 24, 1973
Filing Date:
December 20, 1968
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International Classes:
B01D21/24; B01D3/00; B01D21/01; B01D21/02; B01D21/08; C02F11/12; (IPC1-7): B01D3/00; B01D21/01; C02C1/26