3356881

Information

• Patent Grant
• 3356881

• References
• Source

• Patent Number

  3,356,881

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1967
  57 years ago

• CPC

  • H01J29/34 - provided with permanent marks or references
  • H01J31/121 - tubes for oscillography

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 427 - Coating processes