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经营范围
发明名称
Adjustable combined elevating and supporting device
摘要
申请公布号
US2072791(A)
申请公布日期
1937.03.02
申请号
US19360080900
申请日期
1936.05.20
申请人
BAER LENA M
发明人
BAER LENA M.
分类号
A47B91/12
主分类号
A47B91/12
代理机构
代理人
主权项
地址
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