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发明名称
TELEPHONE TRANSMITTER
摘要
申请公布号
CA382002(A)
申请公布日期
1939.06.13
申请号
CAD382002
申请日期
申请人
ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY
发明人
HAROLD C. PYE
分类号
主分类号
代理机构
代理人
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