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经营范围
发明名称
Vaginal diaphragm
摘要
申请公布号
US2249316(A)
申请公布日期
1941.07.15
申请号
US19400344196
申请日期
1940.07.06
申请人
LAY WILLARD V
发明人
LAY WILLARD V.
分类号
A61F6/08
主分类号
A61F6/08
代理机构
代理人
主权项
地址
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