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经营范围
发明名称
Ladder counterbalancing apparatus
摘要
申请公布号
US2422507(A)
申请公布日期
1947.06.17
申请号
US19450591756
申请日期
1945.05.03
申请人
THE AMERICAN COACH & BODY COMPANY
发明人
TROCHE HERMAN J.;FARRAR ALVIN J.
分类号
E06C5/42
主分类号
E06C5/42
代理机构
代理人
主权项
地址
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