3222778

Information

• Patent Grant
• 3222778

• References
• Source

• Patent Number

  3,222,778

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1965
  59 years ago

• CPC

  • B21D22/201 - Work-pieces; preparation of the work-pieces
  • C21D1/68 - Temporary coatings or embedding materials applied before or during heat treatment
  • C22F1/008 - Using a protective surface layer
  • C23F15/00 - Other methods of preventing corrosion or incrustation
  • Y10T29/49812 - Temporary protective coating, impregnation, or cast layer

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working