3663997

Information

• Patent Grant
• 3663997

• References
• Source

• Patent Number

  3,663,997

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • H01J9/142 - of shadow-masks for colour television tubes
  • H01J9/144 - Mask treatment related to the process of dot deposition during manufacture of luminescent screen

• US Classifications

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