3643687

Information

• Patent Grant
• 3643687

• References
• Source

• Patent Number

  3,643,687

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  52 years ago

• CPC

  • F16K15/148 - the closure elements being fixed in their centre
  • F04B39/108 - circular reed valves
  • Y10T137/7779 - Axes of ports parallel
  • Y10T137/7838 - Plural
  • Y10T137/7862 - Central post on seat

• US Classifications

  • 137 - Fluid handling