2997619

Information

• Patent Grant
• 2997619

• References
• Source

• Patent Number

  2,997,619

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1961
  63 years ago

• CPC

  • H01J29/54 - Arrangements for centring ray or beam

• US Classifications

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