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发明名称
Improvements in or relating to back-rests
摘要
申请公布号
GB615942(A)
申请公布日期
1949.01.13
申请号
GB19460023473
申请日期
1947.06.24
申请人
DENNIS ALBERT ROBBINS
发明人
分类号
A47C9/10
主分类号
A47C9/10
代理机构
代理人
主权项
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