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经营范围
发明名称
Druckmangelsicherung fuer Gasleitungen
摘要
申请公布号
DE679809(C)
申请公布日期
1939.08.14
申请号
DE1936G092413D
申请日期
1936.03.11
申请人
DR. WILLY FIEDLER
发明人
分类号
F16K17/00
主分类号
F16K17/00
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