3428813

Information

• Patent Grant
• 3428813

• References
• Source

• Patent Number

  3,428,813

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  55 years ago

• CPC

  • G01K7/24 - in a specially-adapted circuit
  • G01B11/00 - Measuring arrangements characterised by the use of optical means
  • G01D5/26 - characterised by optical transfer means
  • G01D5/40 - specially adapted for use with infra-red light
  • G01V8/10 - Detecting

• US Classifications

  • 250 - Radiant energy
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 374 - Thermal measuring and testing