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发明名称
Vorrichtung zum Messen des Luftwiderstandes von Atemschutzfiltern
摘要
申请公布号
DE725960(C)
申请公布日期
1942.10.05
申请号
DE1935D071759D
申请日期
1935.12.22
申请人
DRAEGERWERK HEINR. U. BERNH. DRAEGER
发明人
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