3474378

Information

• Patent Grant
• 3474378

• References
• Source

• Patent Number

  3,474,378

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1969
  55 years ago

• CPC

  • F16L53/008 - using electric heating elements in the form of wires, cables, strips, ribbons or the like
  • E03B7/14 - Devices for thawing frozen pipes
  • H01R4/60 - Connections between or with tubular conductors

• US Classifications

  • 439 - Electrical connectors
  • 174 - Electricity: conductors and insulators
  • 392 - Electric resistance heating devices