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发明名称
Manually controllable pumping jack
摘要
申请公布号
US2729942(A)
申请公布日期
1956.01.10
申请号
US19540475974
申请日期
1954.12.17
申请人
THE PELTON WALTER WHEEL COMPANY
发明人
BILLINGS DAVID P.;GARRISON THOMAS E.
分类号
F04B47/04
主分类号
F04B47/04
代理机构
代理人
主权项
地址
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