2213173

Information

• Patent Grant
• 2213173

• References
• Source

• Patent Number

  2,213,173

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1940
  83 years ago

• CPC

  • H01J31/32 - Tubes with image amplification section

• US Classifications

  • 348 - Television
  • 427 - Coating processes