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发明名称
Operator for counterbalanced windows
摘要
申请公布号
US2059436(A)
申请公布日期
1936.11.03
申请号
US19330677015
申请日期
1933.06.22
申请人
CAMPBELL METAL WINDOW CORPORATION
发明人
CAMPBELL HARRY E.
分类号
E05F11/48
主分类号
E05F11/48
代理机构
代理人
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地址
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