3797521

Information

• Patent Grant
• 3797521

• References
• Source

• Patent Number

  3,797,521

• Date Filed

  Not available

• Date Issued

  Tuesday, March 19, 1974
  51 years ago

• CPC

  • F16K15/141 - the closure elements not being fixed to the valve body
  • A61M5/162 - Needle sets
  • F16K15/04 - shaped as balls
  • A61M2005/1623 - Details of air intake
  • Y10T137/3099 - Float responsive
  • Y10T137/7894 - With weight
  • Y10T137/791 - Ball valves

• US Classifications

  • 137 - Fluid handling
  • 604 - Surgery