3644774

Information

• Patent Grant
• 3644774

• References
• Source

• Patent Number

  3,644,774

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • H05B31/305 - Ignition devices

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 314 - Electric lamp and discharge devices: consumable electrodes