1742630

Information

• Patent Grant
• 1742630

• References
• Source

• Patent Number

  1,742,630

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1930
  95 years ago

• CPC

  • H01K9/02 - to provide substitution in the event of failure of one of the bodies

• US Classifications

  • 315 - Electric lamp and discharge devices: systems