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公开(公告)号：US2329505A
公开(公告)日：1943-09-14
申请号：US34561140
申请日：1940-07-15
Applicant: SASKATCHEWAN POTASH
Inventor： ZIMMERMANN FREDERICK J
IPC: B01D9/00
CPC classification number: B01D9/0013 , B01D9/0022 , B01D9/0036
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