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发明名称
Improvements in buttons
摘要
申请公布号
GB869915(A)
申请公布日期
1961.06.07
申请号
GB19560019675
申请日期
1956.06.26
申请人
ALEXANDER PENRHYN ROWLAND SMITH
发明人
分类号
A44B1/28
主分类号
A44B1/28
代理机构
代理人
主权项
地址
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