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发明名称
SOUND ATTENUATOR ATTACHMENT FOR A PROTECTIVE HELMET
摘要
申请公布号
US3430261(A)
申请公布日期
1969.03.04
申请号
USD3430261
申请日期
1967.03.01
申请人
AIR REDUCTION CO. INC.
发明人
CHARLES E. BENNER
分类号
A42B3/16;(IPC1-7):A42B1/08;A42B1/00;A42C5/04
主分类号
A42B3/16
代理机构
代理人
主权项
地址
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