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发明名称
Garage door operator
摘要
申请公布号
US2225785(A)
申请公布日期
1940.12.24
申请号
US19380227998
申请日期
1938.09.01
申请人
KROCKER ADOLF G
发明人
KROCKER ADOLF G.
分类号
E05F13/02
主分类号
E05F13/02
代理机构
代理人
主权项
地址
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