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经营范围
发明名称
Electrocardiograph
摘要
申请公布号
US2229698(A)
申请公布日期
1941.01.28
申请号
US19370148326
申请日期
1937.06.15
申请人
RADIO PATENTS CORP.
发明人
HOLLMANN HANS ERICH
分类号
A61B5/04
主分类号
A61B5/04
代理机构
代理人
主权项
地址
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