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经营范围
发明名称
Diaphragm
摘要
申请公布号
US2463356(A)
申请公布日期
1949.03.01
申请号
US19460658833
申请日期
1946.04.01
申请人
CLARK JOHN T
发明人
CLARK JOHN T.
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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