3851976

Information

• Patent Grant
• 3851976

• References
• Source

• Patent Number

  3,851,976

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • G01N21/8507 - Probe photometers
  • G01J1/1626 - Arrangements with two photodetectors, the signals of which are compared
  • G01N21/27 - using photo-electric detection circuits for computing concentration
  • G01N21/534 - by measuring transmission alone
  • G01N21/85 - Investigating moving fluids or granular solids
  • G06J1/00 - Hybrid computing arrangements
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/24 - Intermediate conversion to pulse frequency type
  • H03M2201/4135 - Momentary value
  • H03M2201/4212 - Serial
  • H03M2201/4225 - Parallel
  • H03M2201/4233 - Bivalued
  • H03M2201/4266 - Decimal radix
  • H03M2201/51 - Analogue conversions
  • H03M2201/72 - Computing
  • H03M2201/8192 - Photoelectric devices

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy