Document Type and Number:
Japanese Patent JPS5642964
Kind Code:
B2
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Application Number:
JP7313878A
Publication Date:
October 08, 1981
Filing Date:
June 16, 1978
Export Citation:
International Classes:
C02F1/44; B01D61/24; B01D61/32; B01D61/38; B01D69/00; B01D71/66