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经营范围
发明名称
Collapsible revolving door
摘要
申请公布号
US2043780(A)
申请公布日期
1936.06.09
申请号
US19350046935
申请日期
1935.10.26
申请人
SIMPSON GEORGE N
发明人
SIMPSON GEORGE N.
分类号
E06B3/90
主分类号
E06B3/90
代理机构
代理人
主权项
地址
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