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经营范围
发明名称
Stairway construction
摘要
申请公布号
US2024032(A)
申请公布日期
1935.12.10
申请号
US19340744994
申请日期
1934.09.21
申请人
GORDON ELGOOD EDWARD
发明人
ELGOOD EDWARD GORDON
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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