2254494

Information

• Patent Grant
• 2254494

• References
• Source

• Patent Number

  2,254,494

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1941
  83 years ago

• CPC

  • H01T21/02 - of sparking plugs
  • Y10T29/5195 - Tire valve or spark plug
  • Y10T29/53204 - Electrode

• US Classifications

  • 219 - Electric heating
  • 029 - Metal working
  • 445 - Electric lamp or space discharge component or device manufacturing