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发明名称
Wassergekuehlte Russabblasevorrichtung fuer Dampfkessel
摘要
申请公布号
DE493043(C)
申请公布日期
1930.03.03
申请号
DE1927G071201D
申请日期
1927.09.10
申请人
FERD. GRAAFEN
发明人
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主分类号
代理机构
代理人
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