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发明名称
Extensible and collapsible posture chair
摘要
申请公布号
US2755843(A)
申请公布日期
1956.07.24
申请号
US19530352771
申请日期
1953.05.04
申请人
CARLSON GUSTAVE A
发明人
CARLSON GUSTAVE A.
分类号
A47C4/22
主分类号
A47C4/22
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代理人
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