1817817

Information

• Patent Grant
• 1817817

• References
• Source

• Patent Number

  1,817,817

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1931
  93 years ago

• CPC

  • G06C7/04 - Interlocking devices
  • G07G1/0036 - Checkout procedures

• US Classifications

  • 235 - Registers