3707986

Information

• Patent Grant
• 3707986

• References
• Source

• Patent Number

  3,707,986

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1973
  52 years ago

• CPC

  • E03C1/288 - having non-return valves against return of waste water
  • F16K15/147 - the closure elements having specially formed slits or being of an elongated easily collapsible form
  • Y10T137/7885 - Multiple slit

• US Classifications

  • 137 - Fluid handling