2989019

Information

• Patent Grant
• 2989019

• References
• Source

• Patent Number

  2,989,019

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • B21D22/22 - with devices for holding the edge of the blanks
  • Y10S220/22 - Seamless

• US Classifications

  • 072 - Metal deforming
  • 220 - Receptacles
  • 267 - Spring devices