2620690

Information

• Patent Grant
• 2620690

• References
• Source

• Patent Number

  2,620,690

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1952
  72 years ago

• CPC

  • B21H1/22 - characterised by use of rolls having circumferentially varying profile; Die-rolling

• US Classifications

  • 072 - Metal deforming