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经营范围
发明名称
Diaphragm introducer
摘要
申请公布号
US2548775(A)
申请公布日期
1951.04.10
申请号
US19490082838
申请日期
1949.03.22
申请人
HOLLAND-RANTOS COMPANY, INC.
发明人
COEL LEO
分类号
A61F6/12
主分类号
A61F6/12
代理机构
代理人
主权项
地址
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