3855521

Information

• Patent Grant
• 3855521

• References
• Source

• Patent Number

  3,855,521

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1974
  50 years ago

• CPC

  • H01F29/02 - with tappings on coil or winding with provision for rearrangement or interconnection of windings
  • H01F29/025 - Constructional details of transformers or reactors with tapping on coil or windings
  • H01H9/0011 - Voltage selector switches
  • Y10T307/297 - Transformer connections

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 200 - Electricity: circuit makers and breakers
  • 307 - Electrical transmission or interconnection systems