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发明名称
Improvements in or relating to buttons
摘要
申请公布号
GB685946(A)
申请公布日期
1953.01.14
申请号
GB19500018542
申请日期
1950.07.25
申请人
WALTHER CONTA;HANS AUGUST PRYM;HERMAN KOEHL
发明人
分类号
A44B1/12
主分类号
A44B1/12
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代理人
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