1624729

Information

• Patent Grant
• 1624729

• References
• Source

• Patent Number

  1,624,729

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1927
  97 years ago

• CPC

  • H02H7/266 - involving switching on a spare supply
  • Y10T307/74 - Switching systems

• US Classifications

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