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发明名称
Vermiculite ore treatment
摘要
申请公布号
US2139358(A)
申请公布日期
1938.12.06
申请号
US19360072530
申请日期
1936.04.03
申请人
UNIVERSAL INSULATION COMPANY
发明人
ERICSON RICHARD
分类号
B07B13/00
主分类号
B07B13/00
代理机构
代理人
主权项
地址
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