2761991

Information

• Patent Grant
• 2761991

• References
• Source

• Patent Number

  2,761,991

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1956
  68 years ago

• CPC

  • H01J37/143 - Permanent magnetic lenses

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 250 - Radiant energy
  • 850 - Scanning-probe techniques or apparatus