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发明名称
Schutzeinrichtung an Objektiven photographischer Apparate.
摘要
申请公布号
AT148291(B)
申请公布日期
1937.01.11
申请号
ATD148291
申请日期
1936.04.11
申请人
"EUMIG" ELEKTRIZITAETS- UND METALLWAREN-INDUSTRIE
发明人
分类号
主分类号
代理机构
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