3693223

Information

• Patent Grant
• 3693223

• References
• Source

• Patent Number

  3,693,223

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1972
  51 years ago

• CPC

  • H01J9/144 - Mask treatment related to the process of dot deposition during manufacture of luminescent screen
  • H01J9/2271 - by photographic processes

• US Classifications

  • 445 - Electric lamp or space discharge component or device manufacturing