Electromagnetic-mechanical locking device applied to subsurface safety valve

Assignee

• Ouro Negro Tecnologias Em Equipamentos Industriais S/A

Inventors

• Unknown
• Giancarlo Vilela de Faria (3 patents)
• Leonardo Gonçalves Candido Gomes (4 patents)
• RICARDO NAOYUKI ALVES DE MORAES SAWAGUCHI (1 patents)

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