2820182

Information

• Patent Grant
• 2820182

• References
• Source

• Patent Number

  2,820,182

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1958
  68 years ago

• CPC

  • G05B11/017 - using photo-electric means

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 250 - Radiant energy
  • 324 - Electricity: measuring and testing