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发明名称
Making cement-asbestos products
摘要
申请公布号
US1872480(A)
申请公布日期
1932.08.16
申请号
US19310551440
申请日期
1931.07.17
申请人
THE DORR COMPANY, INC.
发明人
MAUST ERNEST J.
分类号
B28B1/52;B28B17/02;C04B28/26
主分类号
B28B1/52
代理机构
代理人
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地址
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