2724040

Information

• Patent Grant
• 2724040

• References
• Source

• Patent Number

  2,724,040

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1955
  70 years ago

• CPC

  • G05D23/2237 - using discharge tubes

• US Classifications

  • 219 - Electric heating
  • 034 - Drying and gas or vapor contact with solids
  • 236 - Automatic temperature and humidity regulation