2276506

Information

• Patent Grant
• 2276506

• References
• Source

• Patent Number

  2,276,506

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1942
  82 years ago

• CPC

  • G05D23/2239 - using photoelectric elements

• US Classifications

  • 318 - Electricity: motive power systems
  • 236 - Automatic temperature and humidity regulation
  • 250 - Radiant energy
  • 324 - Electricity: measuring and testing
  • 361 - Electricity: electrical systems and devices