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发明名称
Una máscara antigua de goma provista de válvula para la salida del aire respirado
摘要
申请公布号
ES5171(U)
申请公布日期
1939.09.16
申请号
ES19710000051U
申请日期
1937.12.27
申请人
CASA DEGEA AKTIENGESELLSCHAFT
发明人
分类号
主分类号
代理机构
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