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经营范围
发明名称
Sealing means
摘要
申请公布号
US2700561(A)
申请公布日期
1955.01.25
申请号
US19490069797
申请日期
1949.01.07
申请人
SVENSON ERNEST J
发明人
SVENSON ERNEST J.
分类号
F16J15/32
主分类号
F16J15/32
代理机构
代理人
主权项
地址
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