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经营范围
发明名称
Process of producing composition of matter
摘要
申请公布号
US1879638(A)
申请公布日期
1932.09.27
申请号
US19300494194
申请日期
1930.11.07
申请人
EVANS LEAD COMPANY
发明人
ROWLEY WILLSON H.
分类号
H01M4/56
主分类号
H01M4/56
代理机构
代理人
主权项
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