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经营范围
发明名称
Spring structure
摘要
申请公布号
US1773925(A)
申请公布日期
1930.08.26
申请号
US19280284256
申请日期
1928.06.09
申请人
MEUTSCH CHARLES C
发明人
MEUTSCH CHARLES C.
分类号
A47C27/05
主分类号
A47C27/05
代理机构
代理人
主权项
地址
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