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发明名称
Perfectionnements aux dispositifs permettant de réaliser ou d'interrompre la communication entre deux enceintes
摘要
申请公布号
BE478796(A1)
申请公布日期
1948.01.31
申请号
BE19470478796
申请日期
1947.12.27
申请人
Maurice Chavarot
发明人
Maurice Chavarot
分类号
A61M5/28
主分类号
A61M5/28
代理机构
代理人
主权项
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