1621578

Information

• Patent Grant
• 1621578

• References
• Source

• Patent Number

  1,621,578

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1927
  98 years ago

• CPC

  • B23P9/04 - Treating or finishing by hammering or applying repeated pressure
  • Y10T29/49275 - including forging or hammering

• US Classifications

  • 029 - Metal working