1520533

Information

• Patent Grant
• 1520533

• References
• Source

• Patent Number

  1,520,533

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1924
  100 years ago

• CPC

  • G01N25/62 - by psychrometric means
  • Y10S200/40 - Moisture

• US Classifications

  • 073 - Measuring and testing
  • 200 - Electricity: circuit makers and breakers
  • 236 - Automatic temperature and humidity regulation