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发明名称
METHOD FOR THE MANUFACTURE OF A HEART DEVICE CHIEFLY A STEEL FACING HEART DEVICE FOR USE IN RAIL CROSSINGS AND SWITCHES
摘要
申请公布号
PT77315(A)
申请公布日期
1983.10.01
申请号
PT19830077315
申请日期
1983.09.09
申请人
VOEST-ALPINE AG
发明人
分类号
B23K35/30;E01B7/10;(IPC1-7):B23K/;C22C/
主分类号
B23K35/30
代理机构
代理人
主权项
地址
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