3478216

Information

• Patent Grant
• 3478216

• References
• Source

• Patent Number

  3,478,216

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1969
  55 years ago

• CPC

  • H01J31/503 - with an electromagnetic electron-optic system

• US Classifications

  • 250 - Radiant energy