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Patents for Ernest W. Ostrom
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
2,088,971Aug. 03, 1937G.H. Williams, E.W. OstromPump Anchor Structureoil well pumps
2,298,567Oct. 13, 1942G.H. Williams, E.W. Ostrom, J. KellyPump Anchoroil well pumps
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