1660591

Information

• Patent Grant
• 1660591

• References
• Source

• Patent Number

  1,660,591

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1928
  96 years ago

• CPC

  • H01T13/48 - having means for rendering sparks visible

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 123 - Internal-combustion engines