190711

Information

• Patent Grant
• 190711

• References
• Source

• Patent Number

  190,711

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1877
  147 years ago

• CPC

  • F16K17/04 - spring-loaded
  • Y10T137/7742 - Separate relief valves or valves for each branch
  • Y10T137/7765 - Pilot valve within main valve head
  • Y10T137/7841 - One valve carries head and seat for second valve

• US Classifications

  • 137 - Fluid handling
  • 236 - Automatic temperature and humidity regulation