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发明名称
SCHUTZBRILLE MIT BE- UND ENTLUEFTUNGSOEFFNUNGEN
摘要
申请公布号
DE7220310(U)
申请公布日期
1972.09.14
申请号
DE19720020310U
申请日期
1972.05.31
申请人
RUHRKOHLE AG
发明人
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主分类号
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