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发明名称
Pneumatic motor for oil-well pumps
摘要
申请公布号
US1790203(A)
申请公布日期
1931.01.27
申请号
US19280263412
申请日期
1928.03.21
申请人
JAMES F. GALLAGHER;THE EDWARD C. EKSTROMER CORPORATION
发明人
EKSTROMER EDWARD C.
分类号
F04F1/06
主分类号
F04F1/06
代理机构
代理人
主权项
地址
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