2223691

Information

• Patent Grant
• 2223691

• References
• Source

• Patent Number

  2,223,691

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1940
  84 years ago

• CPC

  • F04B45/02 - having bellows
  • F16L51/029 - consisting of flexible rings

• US Classifications

  • 092 - Expansible chamber devices
  • 285 - Pipe joints or couplings