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经营范围
发明名称
MUTING DEVICE
摘要
申请公布号
US3453547(A)
申请公布日期
1969.07.01
申请号
USD3453547
申请日期
1966.06.13
申请人
P.R. MALLORY & CO. INC.
发明人
WILLIAM E. RIGSBEE;LELYN D. LAKE
分类号
H03G1/02;(IPC1-7):H04B1/06
主分类号
H03G1/02
代理机构
代理人
主权项
地址
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