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经营范围
发明名称
Prefabricated stair
摘要
申请公布号
US3099336(A)
申请公布日期
1963.07.30
申请号
US19600069094
申请日期
1960.11.14
申请人
HAWKINS FLOYD L
发明人
HAWKINS FLOYD L.
分类号
E04F11/035
主分类号
E04F11/035
代理机构
代理人
主权项
地址
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