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发明名称
Density measuring device
摘要
申请公布号
US2601777(A)
申请公布日期
1952.07.01
申请号
US19460641450
申请日期
1946.01.16
申请人
NILES-BEMENT-POND COMPANY
发明人
WOODWARD JAMES S.
分类号
F02D9/00
主分类号
F02D9/00
代理机构
代理人
主权项
地址
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