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发明名称
Drum rolling device
摘要
申请公布号
US2273657(A)
申请公布日期
1942.02.17
申请号
US19410404347
申请日期
1941.07.28
申请人
NORTHERN STEVEDORES, INC.
发明人
OWEN MARK
分类号
B65G7/10
主分类号
B65G7/10
代理机构
代理人
主权项
地址
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