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发明名称
Screw bedspring tighteners
摘要
申请公布号
US2726408(A)
申请公布日期
1955.12.13
申请号
US19520277613
申请日期
1952.03.20
申请人
BENDER LLOYD F
发明人
BENDER LLOYD F.
分类号
A47C23/28
主分类号
A47C23/28
代理机构
代理人
主权项
地址
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