3857090

Information

• Patent Grant
• 3857090

• References
• Source

• Patent Number

  3,857,090

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  51 years ago

• CPC

  • H01J37/3045 - Object or beam position registration
  • G01R19/08 - Measuring current density
  • G01R33/028 - Electrodynamic magnetometers
  • H01J2237/24507 - Intensity, dose or other characteristics of particle beams or electromagnetic radiation
  • H01J2237/30472 - Controlling the beam
  • H01J2237/31749 - Focused ion beam

• US Classifications

  • 324 - Electricity: measuring and testing
  • 250 - Radiant energy