3809945

Information

• Patent Grant
• 3809945

• References
• Source

• Patent Number

  3,809,945

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • H01J29/07 - Shadow masks for colour television tubes
  • Y10S72/701 - Preventing distortion

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 072 - Metal deforming
  • 445 - Electric lamp or space discharge component or device manufacturing