1920173

Information

• Patent Grant
• 1920173

• References
• Source

• Patent Number

  1,920,173

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1933
  91 years ago

• CPC

  • G06G1/0073 - for commerce, bank or invoicing
  • G06G1/00 - Hand manipulated computing devices

• US Classifications

  • 235 - Registers