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发明名称
Spark plug manufacture
摘要
申请公布号
US2446908(A)
申请公布日期
1948.08.10
申请号
US19430508549
申请日期
1943.11.01
申请人
GENERAL MOTORS CORPORATION
发明人
CORBIN DOUGLAS HAYNES
分类号
B22D13/00;B22D13/06;H01T21/02
主分类号
B22D13/00
代理机构
代理人
主权项
地址
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