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经营范围
发明名称
Verfahren und Werkzeug zu umfangverringerndem Verformen, vorzugsweise zum Reduzieren oder Einziehen von rohrfoermigen Werkstuecken
摘要
申请公布号
DE845784(C)
申请公布日期
1952.08.04
申请号
DE1949P030580
申请日期
1949.01.01
申请人
CALUMET AND HECLA CONSOLIDATED COPPER COMPANY
发明人
HILL WALTER PEARL
分类号
B21D22/14
主分类号
B21D22/14
代理机构
代理人
主权项
地址
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