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发明名称
Ball-bearing worm-gear for roller awnings
摘要
申请公布号
US1813524(A)
申请公布日期
1931.07.07
申请号
US19290354546
申请日期
1929.04.12
申请人
THE ASTRUP COMPANY
发明人
ASTRUP WALTER C.
分类号
F16H1/16
主分类号
F16H1/16
代理机构
代理人
主权项
地址
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