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发明名称
Electromechanical translating device
摘要
申请公布号
US1977433(A)
申请公布日期
1934.10.16
申请号
US19330667411
申请日期
1933.04.22
申请人
THOMAS A. EDISON, INCORPORATED
发明人
DUNNING ORVILLE M.
分类号
H04R21/04
主分类号
H04R21/04
代理机构
代理人
主权项
地址
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