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发明名称
ADJUSTABLE YARN TENSION DEVICE
摘要
申请公布号
CA449679(A)
申请公布日期
1948.07.06
申请号
CAD449679
申请日期
申请人
NORTH AMERICAN RAYON CORPORATION
发明人
HERBERT OSWALD NAUMANN
分类号
主分类号
代理机构
代理人
主权项
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