511229

Information

• Patent Grant
• 511229

• References
• Source

• Patent Number

  511,229

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1893
  130 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