1402449

Information

• Patent Grant
• 1402449

• References
• Source

• Patent Number

  1,402,449

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1922
  103 years ago

• CPC

  • C23C8/66 - of ferrous surfaces
  • C23C8/02 - Pre-treatment of the material to be coated
  • Y10S76/02 - Case hardening

• US Classifications

  • 148 - Metal treatment
  • 076 - Metal tools and implements, making