3631902

Information

• Patent Grant
• 3631902

• References
• Source

• Patent Number

  3,631,902

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1972
  53 years ago

• CPC

  • H04N9/285 - using quadrupole lenses
  • H01J29/764 - using toroidal windings
  • Y10T29/49071 - by winding or coiling

• US Classifications

  • 140 - Wireworking
  • 029 - Metal working
  • 313 - Electric lamp and discharge devices
  • 348 - Television