Ricardo Naoyuki Alves De Moraes Sawaguchi

2 Patents

• US125405332026

  Gas Injection Valve in an Oil Production Column

  OURO NEGRO TECNOLOGIAS EM EQUIPAMENTOS INDUSTRIAIS S/A

  0 cites
• US122218552025

  Electromagnetic-mechanical Locking Device Applied to Subsurface Safety Valve

  Ouro Negro Tecnologias Em Equipamentos Industriais S/A

  0 cites