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发明名称
CONICAL DIAPHRAGM
摘要
申请公布号
CA332256(A)
申请公布日期
1933.05.09
申请号
CAD332256
申请日期
申请人
HAROLD BERTRAM MEAD
发明人
HAROLD BERTRAM MEAD
分类号
主分类号
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代理人
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