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Document Type and Number:
Japanese Patent JPH0118230
Kind Code:
Y2
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Application Number:
JP11395181U
Publication Date:
May 26, 1989
Filing Date:
July 31, 1981
Export Citation:
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International Classes:
B01D1/00; C02F1/00; C02F1/06; G05D9/00; G05D9/12; (IPC1-7): C02F1/06; G05D9/12



 
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