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发明名称
Stairs track
摘要
申请公布号
US2312273(A)
申请公布日期
1943.02.23
申请号
US19410403005
申请日期
1941.07.18
申请人
STANLEY STOCHMAL
发明人
STOCHMAL STANLEY
分类号
E04F11/16
主分类号
E04F11/16
代理机构
代理人
主权项
地址
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