3769983

Information

• Patent Grant
• 3769983

• References
• Source

• Patent Number

  3,769,983

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1973
  51 years ago

• CPC

  • A61M16/04 - Tracheal tubes
  • A61M16/0447 - Bell, canopy or umbrella shaped
  • A61M16/0452 - following the inspiration and expiration pressure

• US Classifications

  • 128 - Surgery
  • 604 - Surgery