2257668

Information

• Patent Grant
• 2257668

• References
• Source

• Patent Number

  2,257,668

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1941
  83 years ago

• CPC

  • C23C10/12 - of ferrous surfaces

• US Classifications

  • 427 - Coating processes
  • 148 - Metal treatment