2189237

Information

• Patent Grant
• 2189237

• References
• Source

• Patent Number

  2,189,237

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1940
  85 years ago

• CPC

  • F04B53/126 - Ball valves
  • F04B47/005 - Sand trap arrangements

• US Classifications

  • 417 - Pumps
  • 092 - Expansible chamber devices