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经营范围
发明名称
Rail flash welder
摘要
申请公布号
US2303557(A)
申请公布日期
1942.12.01
申请号
US19410407392
申请日期
1941.08.19
申请人
SPERRY PRODUCTS, INC.
发明人
JONES GEORGE LESTER
分类号
B23K11/04
主分类号
B23K11/04
代理机构
代理人
主权项
地址
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