3475637

Information

• Patent Grant
• 3475637

• References
• Source

• Patent Number

  3,475,637

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1969
  55 years ago

• CPC

  • H01J29/462 - arrangements for interrupting the beam during inoperative periods

• US Classifications

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