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发明名称
Speed control for progressive electric heating and welding
摘要
申请公布号
US2086306(A)
申请公布日期
1937.07.06
申请号
US19320634396
申请日期
1932.09.22
申请人
SESSIONS FRANK L
发明人
SESSIONS FRANK L.
分类号
B23K13/02
主分类号
B23K13/02
代理机构
代理人
主权项
地址
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