Locking backpressure valve

Assignee

• Baker Hughes Oilfield Operations

Inventors

• Larry T. Palmer (30 patents)
• Erik Van Steveninck (8 patents)
• Erik Vilhelm Nordenstam (12 patents)
• Eric Anders Erickson (4 patents)
• Scott Bigrigg (6 patents)

View full patent text on Google Patents →