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发明名称
Revolving door speed control
摘要
申请公布号
US2029318(A)
申请公布日期
1936.02.04
申请号
US19330689633
申请日期
1933.09.15
申请人
INTERNATIONAL DOOR COMPANY
发明人
HAGENBOOK THURLOE M.
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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