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发明名称
Removable ventilated rib for shotguns
摘要
申请公布号
US2869271(A)
申请公布日期
1959.01.20
申请号
US19570667135
申请日期
1957.06.21
申请人
BERG RICHARD J
发明人
BERG RICHARD J.
分类号
F41A21/24
主分类号
F41A21/24
代理机构
代理人
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地址
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