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经营范围
发明名称
Composite belleville spring
摘要
申请公布号
US3029071(A)
申请公布日期
1962.04.10
申请号
US19610081980
申请日期
1961.01.11
申请人
WELLS JOSEPH W
发明人
WELLS JOSEPH W.
分类号
F16B43/00
主分类号
F16B43/00
代理机构
代理人
主权项
地址
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