2227440

Information

• Patent Grant
• 2227440

• References
• Source

• Patent Number

  2,227,440

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1941
  84 years ago

• CPC

  • B21D51/365 - involving fixing closure members to the tubes
  • Y10T29/49856 - Allowing assembled sphere to move in single plane only

• US Classifications

  • 029 - Metal working