2273191

Information

• Patent Grant
• 2273191

• References
• Source

• Patent Number

  2,273,191

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1942
  82 years ago

• CPC

  • G05D23/2239 - using photoelectric elements

• US Classifications

  • 318 - Electricity: motive power systems
  • 236 - Automatic temperature and humidity regulation