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发明名称
Method of and apparatus for the aluminothermic welding of rails
摘要
申请公布号
US2292601(A)
申请公布日期
1942.08.11
申请号
US19390262559
申请日期
1939.03.17
申请人
METAL & THERMIT CORPORATION
发明人
BEGTRUP EDWARD F.
分类号
E01B11/52
主分类号
E01B11/52
代理机构
代理人
主权项
地址
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