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经营范围
发明名称
Snubbed spring group
摘要
申请公布号
US2657040(A)
申请公布日期
1953.10.27
申请号
US19500198583
申请日期
1950.12.01
申请人
AMERICAN STEEL FOUNDRIES
发明人
RAMOS LAWRENCE F.
分类号
B61F5/12
主分类号
B61F5/12
代理机构
代理人
主权项
地址
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