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发明名称
Trap
摘要
申请公布号
US2018880(A)
申请公布日期
1935.10.29
申请号
US19330698341
申请日期
1933.11.16
申请人
WOODHEAD JOHN A
发明人
WOODHEAD JOHN A.
分类号
F41J9/30
主分类号
F41J9/30
代理机构
代理人
主权项
地址
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