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发明名称
Flotation material and process of making same
摘要
申请公布号
US1785742(A)
申请公布日期
1930.12.23
申请号
US19240750505
申请日期
1924.11.17
申请人
THE BARRETT COMPANY
发明人
MILLER STUART P.
分类号
B03D1/01
主分类号
B03D1/01
代理机构
代理人
主权项
地址
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