3321667

Information

• Patent Grant
• 3321667

• References
• Source

• Patent Number

  3,321,667

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1967
  57 years ago

• CPC

  • B23K11/251 - using analog means

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 219 - Electric heating