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发明名称
Tracheal instrument
摘要
申请公布号
US2198241(A)
申请公布日期
1940.04.23
申请号
US19390263699
申请日期
1939.03.23
申请人
发明人
BREHM WILLIAM F.
分类号
A61F2/20;A61M16/04
主分类号
A61F2/20
代理机构
代理人
主权项
地址
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