3816687

Information

• Patent Grant
• 3816687

• References
• Source

• Patent Number

  3,816,687

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • H01F27/402 - Association of measuring or protective means
  • E03F5/0407 - Floor drains for indoor use
  • E04D13/0409 - Drainage outlets
  • H01F27/022 - Encapsulation
  • H01F27/06 - Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
  • H05B3/00 - Ohmic-resistance heating
  • E04D2013/0418 - with de-icing devices or snow melters

• US Classifications

  • 219 - Electric heating
  • 222 - Dispensing
  • 392 - Electric resistance heating devices