3604080

Information

• Patent Grant
• 3604080

• References
• Source

• Patent Number

  3,604,080

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1971
  53 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0022 - Manufacture

• US Classifications

  • 445 - Electric lamp or space discharge component or device manufacturing
  • 219 - Electric heating
  • 451 - Abrading