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发明名称
Spring construction
摘要
申请公布号
US1837885(A)
申请公布日期
1931.12.22
申请号
US19280277417
申请日期
1928.05.14
申请人
UNITED SPRING CORPORATION
发明人
NEWMAN GEORGE I.;NEW LAWRENCE A.
分类号
A47C23/053
主分类号
A47C23/053
代理机构
代理人
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地址
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