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发明名称
Scuttle and ladder combination
摘要
申请公布号
US2840289(A)
申请公布日期
1958.06.24
申请号
US19530379842
申请日期
1953.09.14
申请人
JOSEPH MURRAY JOHN
发明人
MURRAY JOHN JOSEPH
分类号
E04F11/04
主分类号
E04F11/04
代理机构
代理人
主权项
地址
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