1444189

Information

• Patent Grant
• 1444189

• References
• Source

• Patent Number

  1,444,189

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1923
  101 years ago

• CPC

  • F16K41/18 - sealing only when the closure member is in the opened position
  • Y10S137/901 - Biased ball valves with operators

• US Classifications

  • 251 - Valves and valve actuation
  • 137 - Fluid handling