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经营范围
发明名称
Greens material
摘要
申请公布号
US1875867(A)
申请公布日期
1932.09.06
申请号
US19300483130
申请日期
1930.09.19
申请人
ARMSTRONG CORK COMPANY
发明人
HARTMAN SAMUEL H.;POWERS HENRY L.
分类号
E01C13/08
主分类号
E01C13/08
代理机构
代理人
主权项
地址
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