3923561

Information

• Patent Grant
• 3923561

• References
• Source

• Patent Number

  3,923,561

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1975
  49 years ago

• CPC

  • C21D1/06 - Surface hardening
  • C21D9/24 - for saw blades

• US Classifications

  • 148 - Metal treatment