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1.发明授权Process of treating minerals containing compounds of iron, potassium and aluminum 失效处理含铁，钾，铝化合物的矿物的工艺
公开(公告)号：US1843779A
公开(公告)日：1932-02-02
申请号：US23178227
申请日：1927-11-07
Applicant: ELECTRO COMPANY
Inventor： MCWHORTER JR PURNAL LYNCH
IPC: C01G49/14
CPC classification number: C01G49/14
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