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发明名称
HEADSET INCORPORATING A MICROPHONE AND AN EARPHONE
摘要
申请公布号
US3588384(A)
申请公布日期
1971.06.28
申请号
USD3588384
申请日期
1968.12.16
申请人
ELECTRO VOICE INC.
发明人
MARVIN C. NEGLEY
分类号
H04M1/05;(IPC1-7):H04M1/05;H04R1/28
主分类号
H04M1/05
代理机构
代理人
主权项
地址
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