427752

Information

• Patent Grant
• 427752

• References
• Source

• Patent Number

  427,752

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1890
  135 years ago

• CPC

  • E03C1/288 - having non-return valves against return of waste water
  • Y10T137/4501 - Ball valve
  • Y10T137/7908 - Weight biased

• US Classifications

  • 137 - Fluid handling