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发明名称
Gasmaske mit Mikrophon und zugehöriger Lautverstärkungseinrichtung.
摘要
申请公布号
CH192705(A)
申请公布日期
1937.08.31
申请号
CHD192705
申请日期
1935.11.02
申请人
HORAK,JAN
发明人
HORAK,JAN
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主分类号
代理机构
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