1942572

Information

• Patent Grant
• 1942572

• References
• Source

• Patent Number

  1,942,572

• Date Filed

  Not available

• Date Issued

  Tuesday, January 9, 1934
  91 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