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发明名称
Herstellung von Federn spiralenaehnlicher Form
摘要
申请公布号
DE580977(C)
申请公布日期
1933.07.19
申请号
DE1930B147975D
申请日期
1930.06.19
申请人
HENNY BOETTJER GEB. WILKENS
发明人
分类号
B21F35/00;F16F1/02
主分类号
B21F35/00
代理机构
代理人
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地址
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