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发明名称
Doorknob
摘要
申请公布号
US2123539(A)
申请公布日期
1938.07.12
申请号
US19380193233
申请日期
1938.03.01
申请人
THE AMERICAN HARDWARE CORPORATION
发明人
MORGEN SIGURD P.
分类号
E05B1/00
主分类号
E05B1/00
代理机构
代理人
主权项
地址
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