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经营范围
发明名称
Mechanical seal for pumps
摘要
申请公布号
US2863680(A)
申请公布日期
1958.12.09
申请号
US19550529061
申请日期
1955.08.17
申请人
NATIONAL LEAD COMPANY
发明人
JR. JOHN A. TALTAVALL,
分类号
F04D29/12;F16J15/34
主分类号
F04D29/12
代理机构
代理人
主权项
地址
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