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发明名称
Bed step
摘要
申请公布号
US2975436(A)
申请公布日期
1961.03.21
申请号
US19580743203
申请日期
1958.06.19
申请人
THE RIES MANUFACTURING COMPANY
发明人
RIES ELMER F.
分类号
A47C21/00;A61G7/053
主分类号
A47C21/00
代理机构
代理人
主权项
地址
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