2667644

Information

• Patent Grant
• 2667644

• References
• Source

• Patent Number

  2,667,644

• Date Filed

  Not available

• Date Issued

  Tuesday, February 2, 1954
  70 years ago

• CPC

  • A61F2/644 - of the single-bar or multi-bar linkage type
  • A61F2/604 - Joints for artificial legs
  • A61F2/68 - Operating or control means
  • A61F2/6607 - Ankle joints
  • A61F2002/5073 - Helical springs
  • A61F2002/6614 - Feet
  • A61F2002/6818 - for braking
  • A61F2002/744 - Vane- or curved-cylinder type actuators
  • A61F2002/745 - hydraulic
  • A61F2002/748 - Valve systems

• US Classifications

  • 623 - Prosthesis