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发明名称
EXTENSIBLE SPRING BALANCE
摘要
申请公布号
CA484403(A)
申请公布日期
1952.07.01
申请号
CAD484403
申请日期
申请人
LOUIS DE VRIES;ABRAHAM DE VRIES
发明人
LOUIS DE VRIES;ABRAHAM DE VRIES
分类号
主分类号
代理机构
代理人
主权项
地址
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