3421950

Information

• Patent Grant
• 3421950

• References
• Source

• Patent Number

  3,421,950

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1969
  57 years ago

• CPC

  • C22F1/008 - Using a protective surface layer
  • C21D1/70 - while heating or quenching
  • C22C29/00 - Alloys based on carbides, oxides, nitrides, borides, or silicides

• US Classifications

  • 148 - Metal treatment