2138867

Information

• Patent Grant
• 2138867

• References
• Source

• Patent Number

  2,138,867

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1938
  86 years ago

• CPC

  • B21J9/04 - Piercing presses
  • B21K1/10 - of cylindrical form
  • B21K5/10 - Forming drill-bit shanks

• US Classifications

  • 072 - Metal deforming