1397188

Information

• Patent Grant
• 1397188

• References
• Source

• Patent Number

  1,397,188

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1921
  104 years ago

• CPC

  • G06C11/02 - with visual indication
  • G06C29/00 - Combinations of computing machines with other machines

• US Classifications

  • 235 - Registers