2928004

Information

• Patent Grant
• 2928004

• References
• Source

• Patent Number

  2,928,004

• Date Filed

  Not available

• Date Issued

  Tuesday, March 8, 1960
  64 years ago

• CPC

  • H01J37/143 - Permanent magnetic lenses

• US Classifications

  • 250 - Radiant energy
  • 313 - Electric lamp and discharge devices
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets