2734989

Information

• Patent Grant
• 2734989

• References
• Source

• Patent Number

  2,734,989

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1956
  68 years ago

• CPC

  • F24H3/082 - The tubes being an electrical isolator containing the heater

• US Classifications

  • 392 - Electric resistance heating devices
  • 165 - Heat exchange