3670957

Information

• Patent Grant
• 3670957

• References
• Source

• Patent Number

  3,670,957

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • G06C7/08 - with one set of keys for all denominations
  • G06C15/04 - Adding or subtracting devices

• US Classifications

  • 235 - Registers