1491800

Information

• Patent Grant
• 1491800

• References
• Source

• Patent Number

  1,491,800

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1924
  100 years ago

• CPC

  • G06G1/0078 - for calculating interests
  • B43K29/093 - with calculators

• US Classifications

  • 235 - Registers