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发明名称
Stem construction for inner tubes used on drop center rims
摘要
申请公布号
US2022545(A)
申请公布日期
1935.11.26
申请号
US19310573317
申请日期
1931.11.06
申请人
MARKEN EINAR H
发明人
MARKEN EINAR H.
分类号
B60C29/04
主分类号
B60C29/04
代理机构
代理人
主权项
地址
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