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发明名称
Nozzle stopper
摘要
申请公布号
US2259669(A)
申请公布日期
1941.10.21
申请号
US19410402899
申请日期
1941.07.18
申请人
SWANK RALPH L
发明人
SWANK RALPH L.
分类号
B22D41/18
主分类号
B22D41/18
代理机构
代理人
主权项
地址
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