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发明名称
Metal-frame door
摘要
申请公布号
US1797440(A)
申请公布日期
1931.03.24
申请号
US19270225116
申请日期
1927.10.10
申请人
VARIETY FIRE DOOR COMPANY
发明人
NEW ALVIN G.
分类号
E06B3/58;E06B3/72
主分类号
E06B3/58
代理机构
代理人
主权项
地址
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