3845400

Information

• Patent Grant
• 3845400

• References
• Source

• Patent Number

  3,845,400

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1974
  50 years ago

• CPC

  • G01J1/16 - using electric radiation detectors
  • G01N21/27 - using photo-electric detection circuits for computing concentration
  • G01N21/274 - Calibration, base line adjustment, drift correction
  • G06G7/75 - for component analysis

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 250 - Radiant energy
  • 356 - Optics: measuring and testing