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发明名称
Dilator
摘要
申请公布号
US2281600(A)
申请公布日期
1942.05.05
申请号
US19390293285
申请日期
1939.09.02
申请人
EMMA ELIZABETH ROSS
发明人
ROSS JOSEPH R.
分类号
A61M29/02
主分类号
A61M29/02
代理机构
代理人
主权项
地址
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