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经营范围
发明名称
Machine to countersink twenty holes in a wheel hub shell for long spokes
摘要
申请公布号
US1961404(A)
申请公布日期
1934.06.05
申请号
US19320625994
申请日期
1932.07.29
申请人
GENERAL MOTORS CORPORATION
发明人
TORMYN HERMAN;WIETHOFF FRANK F.
分类号
B21D22/04
主分类号
B21D22/04
代理机构
代理人
主权项
地址
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