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发明名称
Apparatus for varying the stroke of pump rods and the like
摘要
申请公布号
US2123374(A)
申请公布日期
1938.07.12
申请号
US19370163682
申请日期
1937.09.13
申请人
NAISMITH MCGAUCHIE ERNEST FRAN
发明人
MCGAUCHIE ERNEST FRANCIS NAISMITH
分类号
F03D9/02
主分类号
F03D9/02
代理机构
代理人
主权项
地址
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