Blowout preventer trolley

Assignee

• Patterson-Uti Drilling Company

Inventors

• Katherine J. Holst (3 patents)
• Michael Jones (26 patents)
• Tyson Andrew Springer (3 patents)
• Kristopher Landon Murray Butler (3 patents)
• Bradley James Schroeder (4 patents)
• Christopher Medland (3 patents)

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