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经营范围
发明名称
Hollow metal doors
摘要
申请公布号
US3004641(A)
申请公布日期
1961.10.17
申请号
US19590789893
申请日期
1959.01.29
申请人
JOHNSON ROBERT C
发明人
JOHNSON ROBERT C.
分类号
E06B3/72
主分类号
E06B3/72
代理机构
代理人
主权项
地址
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