2221070

Information

• Patent Grant
• 2221070

• References
• Source

• Patent Number

  2,221,070

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • H01J43/04 - Electron multipliers
  • Y10S29/063 - Fluid conveyor or applicator

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 029 - Metal working
  • 330 - Amplifiers