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经营范围
发明名称
Adjustable window balance
摘要
申请公布号
US2480476(A)
申请公布日期
1949.08.30
申请号
US19460703771
申请日期
1946.10.17
申请人
发明人
JOHNSON ROY G.
分类号
E05D13/00
主分类号
E05D13/00
代理机构
代理人
主权项
地址
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