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发明名称
Piston
摘要
申请公布号
US1756768(A)
申请公布日期
1930.04.29
申请号
US19270221498
申请日期
1927.09.23
申请人
VERA C. BATCHELDER
发明人
THOMAS LESLIE J.
分类号
F16J1/04
主分类号
F16J1/04
代理机构
代理人
主权项
地址
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