2017726

Information

• Patent Grant
• 2017726

• References
• Source

• Patent Number

  2,017,726

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1935
  89 years ago

• CPC

  • H01J61/66 - having one or more specially shaped cathodes

• US Classifications

  • 313 - Electric lamp and discharge devices