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发明名称
Bed spring
摘要
申请公布号
US2700777(A)
申请公布日期
1955.02.01
申请号
US19490099138
申请日期
1949.06.15
申请人
RUDOLPH COOPERSMITH
发明人
COOPERSMITH RUDOLPH
分类号
A47C23/053
主分类号
A47C23/053
代理机构
代理人
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