2878418

Information

• Patent Grant
• 2878418

• References
• Source

• Patent Number

  2,878,418

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1959
  65 years ago

• CPC

  • G09F9/307 - being incandescent filaments
  • H01K7/04 - for indicating

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 040 - Card, picture, or sign exhibiting
  • 313 - Electric lamp and discharge devices
  • 445 - Electric lamp or space discharge component or device manufacturing