1914439

Information

• Patent Grant
• 1914439

• References
• Source

• Patent Number

  1,914,439

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1933
  91 years ago

• CPC

  • C21D9/06 - with diminished tendency to become wavy
  • B21D3/05 - arranged on axes rectangular to the path of the work

• US Classifications

  • 072 - Metal deforming
  • 148 - Metal treatment