2021686

Information

• Patent Grant
• 2021686

• References
• Source

• Patent Number

  2,021,686

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1935
  90 years ago

• CPC

  • B21B21/06 - Devices for revolving work between the steps

• US Classifications

  • 072 - Metal deforming