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经营范围
发明名称
CONSTANT ARC LENGTH WELDING SYSTEM INSENSITIVE TO CURRENT CHANGES
摘要
申请公布号
US3538299(A)
申请公布日期
1970.11.03
申请号
USD3538299
申请日期
1969.03.20
申请人
AIR REDUCTION CO. INC.
发明人
EVANS H. DAGGETT
分类号
B23K9/073;B23K9/09;(IPC1-7):B23K9/10
主分类号
B23K9/073
代理机构
代理人
主权项
地址
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