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发明名称
Doorknob
摘要
申请公布号
US1803375(A)
申请公布日期
1931.05.05
申请号
US19280289743
申请日期
1928.07.02
申请人
ADAMS GEORGE R
发明人
ADAMS GEORGE R.
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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