2931577

Information

• Patent Grant
• 2931577

• References
• Source

• Patent Number

  2,931,577

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1960
  65 years ago

• CPC

  • G05D23/224 - using selfs or transformers

• US Classifications

  • 236 - Automatic temperature and humidity regulation
  • 361 - Electricity: electrical systems and devices