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发明名称
Safety lifeline lock unit for building supported scaffolds
摘要
申请公布号
US2758887(A)
申请公布日期
1956.08.14
申请号
US19520291735
申请日期
1952.06.04
申请人
JOAN HEROD VAN VOORHEES
发明人
HEROD FAY RANDLE
分类号
E04G3/32
主分类号
E04G3/32
代理机构
代理人
主权项
地址
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