3562795

Information

• Patent Grant
• 3562795

• References
• Source

• Patent Number

  3,562,795

• Date Filed

  Not available

• Date Issued

  Tuesday, February 9, 1971
  53 years ago

• CPC

  • G01J3/42 - Absorption spectrometry Double beam spectrometry Flicker spectrometry Reflection spectrometry
  • G01J1/16 - using electric radiation detectors
  • G01J1/1626 - Arrangements with two photodetectors, the signals of which are compared
  • G01N21/27 - using photo-electric detection circuits for computing concentration
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/14 - Scale factor modification
  • H03M2201/192 - Measuring systems
  • H03M2201/24 - Intermediate conversion to pulse frequency type
  • H03M2201/4135 - Momentary value
  • H03M2201/4225 - Parallel
  • H03M2201/4266 - Decimal radix
  • H03M2201/51 - Analogue conversions
  • H03M2201/60 - Fidelity improvement
  • H03M2201/6114 - Manual
  • H03M2201/8128 - Diodes
  • H03M2201/8192 - Photoelectric devices
  • H03M2201/841 - Dynamo-electric machines
  • H03M2201/848 - Relays

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy
  • 341 - Coded data generation or conversion