3719992

Information

• Patent Grant
• 3719992

• References
• Source

• Patent Number

  3,719,992

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  52 years ago

• CPC

  • B23P15/005 - keys
  • B21D53/42 - keys
  • Y10S83/917 - Notching

• US Classifications

  • 030 - Cutlery
  • 083 - Cutting