3517247

Information

• Patent Grant
• 3517247

• References
• Source

• Patent Number

  3,517,247

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1970
  54 years ago

• CPC

  • H01T13/48 - having means for rendering sparks visible

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 324 - Electricity: measuring and testing
  • 385 - Optical waveguides