2817750

Information

• Patent Grant
• 2817750

• References
• Source

• Patent Number

  2,817,750

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1957
  67 years ago

• CPC

  • B23K9/1037 - Means preventing crater forming at the extremity of the seam

• US Classifications

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