1897770

Information

• Patent Grant
• 1897770

• References
• Source

• Patent Number

  1,897,770

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1933
  92 years ago

• CPC

  • B21B19/12 - the axes of the rollers being arranged essentially parallel to the axis of the work
  • Y10S29/043 - Upsetting and flanging tube end

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working