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经营范围
发明名称
Shell-feeding device
摘要
申请公布号
US2320465(A)
申请公布日期
1943.06.01
申请号
US19400364768
申请日期
1940.11.08
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
PILCHER WILLIAM S.
分类号
F42B33/00
主分类号
F42B33/00
代理机构
代理人
主权项
地址
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