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发明名称
Slip-on plastic cover for steel head bands
摘要
申请公布号
US2954442(A)
申请公布日期
1960.09.27
申请号
US19560587025
申请日期
1956.05.24
申请人
JESSE MICKENBERG
发明人
MICKENBERG JESSE
分类号
H04R1/10
主分类号
H04R1/10
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