2678021

Information

• Patent Grant
• 2678021

• References
• Source

• Patent Number

  2,678,021

• Date Filed

  Not available

• Date Issued

  Tuesday, May 11, 1954
  70 years ago

• CPC

  • G01G23/34 - combined with price indicators

• US Classifications

  • 116 - Signals and indicators
  • 177 - Weighing scales
  • 359 - Optical: systems and elements