2449838

Information

• Patent Grant
• 2449838

• References
• Source

• Patent Number

  2,449,838

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1948
  76 years ago

• CPC

  • H01J29/94 - Selection of substances for gas fillings Means for obtaining or maintaining the desired pressure within the tube
  • H01J7/14 - Means for obtaining or maintaining the desired pressure within the vessel

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 023 - Chemistry: physical processes
  • 138 - Pipes and tubular conduits
  • 251 - Valves and valve actuation