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发明名称
Aandedrætsapparat til Opretholdelse af Aandedrættet under Vand.
摘要
申请公布号
DK44987(C)
申请公布日期
1931.12.14
申请号
DKD44987
申请日期
1928.11.20
申请人
MINE SAFETY APPLIANCES COMPANY
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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