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发明名称
Garage door operating mechanism
摘要
申请公布号
US2921782(A)
申请公布日期
1960.01.19
申请号
US19560629844
申请日期
1956.12.21
申请人
CAMPBELL HENRY H
发明人
CAMPBELL HENRY H.
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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