2639398

Information

• Patent Grant
• 2639398

• References
• Source

• Patent Number

  2,639,398

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1953
  71 years ago

• CPC

  • H01J31/14 - Magic-eye or analogous tuning indicators
  • C09J7/04 - on paper or textile fabric
  • C09J2400/283 - in the substrate

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 334 - Tuners