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发明名称
Garage door opening and closing device
摘要
申请公布号
US1835735(A)
申请公布日期
1931.12.08
申请号
US19290412969
申请日期
1929.12.10
申请人
WARD JOHN W;WARD BERRY A
发明人
WARD JOHN W.;WARD BERRY A.
分类号
E05F13/04
主分类号
E05F13/04
代理机构
代理人
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