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发明名称
Sash balance
摘要
申请公布号
US2384980(A)
申请公布日期
1945.09.18
申请号
US19440547822
申请日期
1944.08.03
申请人
GRAND RAPIDS HARDWARE COMPANY
发明人
VIEHWEGER AUGUST
分类号
E05D13/00;E05F1/16
主分类号
E05D13/00
代理机构
代理人
主权项
地址
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