2977502

Information

• Patent Grant
• 2977502

• References
• Source

• Patent Number

  2,977,502

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1961
  64 years ago

• CPC

  • H01J25/46 - the backward travelling wave being utilised

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices