2258728

Information

• Patent Grant
• 2258728

• References
• Source

• Patent Number

  2,258,728

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1941
  83 years ago

• CPC

  • H01J31/32 - Tubes with image amplification section

• US Classifications

  • 348 - Television
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems