1723422

Information

• Patent Grant
• 1723422

• References
• Source

• Patent Number

  1,723,422

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1929
  95 years ago

• CPC

  • H01T13/12 - Means on sparking plugs for facilitating engagement by tool or by hand

• US Classifications

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