1491828

Information

• Patent Grant
• 1491828

• References
• Source

• Patent Number

  1,491,828

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1924
  101 years ago

• CPC

  • G06G1/00 - Hand manipulated computing devices
  • G06G1/0078 - for calculating interests

• US Classifications

  • 235 - Registers