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发明名称
HEARING PROTECTOR HEADSETS
摘要
申请公布号
US3579640(A)
申请公布日期
1971.05.25
申请号
USD3579640
申请日期
1970.02.11
申请人
AMERICAN OPTICAL CORP.
发明人
FRED P. BEGUIN;HARRY DOSTOURIAN
分类号
A61F11/14;(IPC1-7):A42B1/06
主分类号
A61F11/14
代理机构
代理人
主权项
地址
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