1945749

Information

• Patent Grant
• 1945749

• References
• Source

• Patent Number

  1,945,749

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1934
  91 years ago

• CPC

  • H01J17/063 - Indirectly heated cathodes

• US Classifications

  • 313 - Electric lamp and discharge devices