1406139

Information

• Patent Grant
• 1406139

• References
• Source

• Patent Number

  1,406,139

• Date Filed

  Not available

• Date Issued

  Tuesday, February 7, 1922
  103 years ago

• CPC

  • B23C3/051 - Reconditioning of valve seats
  • Y10T408/5587 - Valve fitting

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 451 - Abrading