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经营范围
发明名称
SEMIPERMEABLE MEMBRANE
摘要
申请公布号
US4032440(A)
申请公布日期
1977.06.28
申请号
US19750633140
申请日期
1975.11.18
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE INTERIOR
发明人
YASUDA, HIROTSUGU
分类号
(IPC1-7):B01D31/00;B01D13/00
主分类号
(IPC1-7):B01D31/00
代理机构
代理人
主权项
地址
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