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发明名称
Valve stem and method of making same
摘要
申请公布号
GB374742(A)
申请公布日期
1932.06.16
申请号
GB19310027244
申请日期
1931.09.30
申请人
A. SCHRADER'S SON, INCORPORATED
发明人
分类号
B21K1/22
主分类号
B21K1/22
代理机构
代理人
主权项
地址
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