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USPTO Patent Rankings Data through Sept 30, 2025
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Nine Downhole Technologies

Rank (2019): #15,886 of 32,327Top 50%
2 inventors
2 Patents 2019

Top Inventors at Nine Downhole Technologies 2019

Showing 1–2 of 2 inventors

RankNamePatents
1 Donald Roy Greenlee 2
2 Donald Jonathan Greenlee 1