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发明名称
Impulse transmitter
摘要
申请公布号
US1965121(A)
申请公布日期
1934.07.03
申请号
US19300443137
申请日期
1930.04.10
申请人
THE AMERICAN SELF-SELECTOR CORP
发明人
KARDORFF LEON
分类号
H04M1/274
主分类号
H04M1/274
代理机构
代理人
主权项
地址
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