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发明名称
Counterbalancing device
摘要
申请公布号
US1874077(A)
申请公布日期
1932.08.30
申请号
US19290416283
申请日期
1929.12.24
申请人
ANDERSON ELLIS G
发明人
ANDERSON ELLIS G.
分类号
E06B9/62
主分类号
E06B9/62
代理机构
代理人
主权项
地址
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