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经营范围
发明名称
Door and door operating device
摘要
申请公布号
US1820941(A)
申请公布日期
1931.09.01
申请号
US19270241957
申请日期
1927.12.22
申请人
发明人
HAWKS MILES W.
分类号
E05D15/12;E05F1/02;E05F1/04;E05F11/04;E05F11/54
主分类号
E05D15/12
代理机构
代理人
主权项
地址
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