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发明名称
Automatic take-up device
摘要
申请公布号
US2297963(A)
申请公布日期
1942.10.06
申请号
US19420432408
申请日期
1942.02.26
申请人
SAMUEL KROLL;KROLL NATHAN J
发明人
KROLL SAMUEL;KROLL NATHAN J.
分类号
A47D7/03
主分类号
A47D7/03
代理机构
代理人
主权项
地址
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