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发明名称
SELF-CLOSING COVER PLATE FOR AIR SHAFTS OR EMERGENCY EXITS OF SHELTERS, PARTICULARLY UNDERGROUND SHELTERS
摘要
申请公布号
CA721623(A)
申请公布日期
1965.11.16
申请号
CAD721623
申请日期
申请人
BOCHUMER EISENHUTTE HEINTZMANN AND CO.
发明人
JOST-DIETLAV KLOSE;RUDOLF SEIZ;HEINZ EICKHOFF
分类号
主分类号
代理机构
代理人
主权项
地址
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