3707643

Information

• Patent Grant
• 3707643

• References
• Source

• Patent Number

  3,707,643

• Date Filed

  Not available

• Date Issued

  Tuesday, December 26, 1972
  52 years ago

• CPC

  • H01K1/50 - Selection of substances for gas fillings Specified pressure thereof
  • H01K3/22 - Exhausing, degassing, filling, or cleaning vessels
  • Y02B20/12 - Halogen lamps

• US Classifications

  • 313 - Electric lamp and discharge devices