3650849

Information

• Patent Grant
• 3650849

• References
• Source

• Patent Number

  3,650,849

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1972
  52 years ago

• CPC

  • C21D1/06 - Surface hardening
  • C21D9/18 - for knives, scythes, scissors, or like hand cutting tools
  • C21D2211/008 - Martensite
  • C21D2221/00 - Treating localised areas of an article
  • Y10S148/905 - Cutting tool

• US Classifications

  • 148 - Metal treatment
  • 030 - Cutlery
  • 076 - Metal tools and implements, making