3743429

Information

• Patent Grant
• 3743429

• References
• Source

• Patent Number

  3,743,429

• Date Filed

  Not available

• Date Issued

  Tuesday, July 3, 1973
  51 years ago

• CPC

  • G01N21/253 - for batch operation
  • G01N21/27 - using photo-electric detection circuits for computing concentration
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/192 - Measuring systems
  • H03M2201/2311 - using a continuously varying analogue reference signal
  • H03M2201/4135 - Momentary value
  • H03M2201/4212 - Serial
  • H03M2201/4225 - Parallel
  • H03M2201/4233 - Bivalued
  • H03M2201/425 - Non-denominational
  • H03M2201/4266 - Decimal radix
  • H03M2201/4279 - Pure
  • H03M2201/51 - Analogue conversions
  • H03M2201/534 - Logarithmic, exponential
  • H03M2201/60 - Fidelity improvement
  • H03M2201/6114 - Manual
  • H03M2201/6121 - Automatic
  • H03M2201/72 - Computing
  • H03M2201/8112 - Gaseous tubes
  • H03M2201/8192 - Photoelectric devices
  • H03M2201/847 - Switches

• US Classifications

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