3633072

Information

• Patent Grant
• 3633072

• References
• Source

• Patent Number

  3,633,072

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1972
  53 years ago

• CPC

  • H02H3/353 - involving comparison of phase voltages
  • Y10T307/839 - Polarity, phase sequence or reverse flow

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 307 - Electrical transmission or interconnection systems