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发明名称
Vorrichtung zum Feststellen, Anzeigen und Aufzeichnen der Gegenwart von entzündbaren Dämpfen und Gasen, insbesondere in Bergwerken.
摘要
申请公布号
AT122155(B)
申请公布日期
1931.04.10
申请号
ATD122155
申请日期
1927.11.10
申请人
HENRY THOMAS RINGROSE
发明人
HENRY THOMAS RINGROSE
分类号
主分类号
代理机构
代理人
主权项
地址
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