2244558

Information

• Patent Grant
• 2244558

• References
• Source

• Patent Number

  2,244,558

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1941
  83 years ago

• CPC

  • C09K11/671 - Chalcogenides
  • C09K11/673 - with alkaline earth metals

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 252 - Compositions
  • 501 - Compositions: ceramic