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发明名称
Multiplex transmitter
摘要
申请公布号
US1812570(A)
申请公布日期
1931.06.30
申请号
US19280244930
申请日期
1928.01.06
申请人
SAFE DEPOSIT AND TRUST COMPANY OF BALTIMORE
发明人
STUNZ WILLIAM P.
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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