2242100

Information

• Patent Grant
• 2242100

• References
• Source

• Patent Number

  2,242,100

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1941
  83 years ago

• CPC

  • H01J35/20 - Selection of substances for gas fillings Means for obtaining or maintaining the desired pressure within the tube
  • H01J2235/205 - Gettering

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 417 - Pumps