3640500

Information

• Patent Grant
• 3640500

• References
• Source

• Patent Number

  3,640,500

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  53 years ago

• CPC

  • F16K3/243 - Packings
  • F16K3/0227 - Packings
  • F16K3/029 - with two or more gates
  • F16K5/0407 - with particular plug arrangements
  • F16K5/0457 - Packings
  • Y10S137/90 - Bumpless manual to automatic relays
  • Y10S251/90 - Valves with o-rings

• US Classifications

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