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发明名称
Hem opening device
摘要
申请公布号
US2308133(A)
申请公布日期
1943.01.12
申请号
US19400346030
申请日期
1940.07.17
申请人
WEST EDWARD E
发明人
WEST EDWARD E.
分类号
D05B35/02
主分类号
D05B35/02
代理机构
代理人
主权项
地址
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