2520475

Information

• Patent Grant
• 2520475

• References
• Source

• Patent Number

  2,520,475

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1950
  74 years ago

• CPC

  • C23C22/67 - with solutions containing hexavalent chromium

• US Classifications

  • 148 - Metal treatment