3179808

Information

• Patent Grant
• 3179808

• References
• Source

• Patent Number

  3,179,808

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1965
  59 years ago

• CPC

  • G01J1/42 - using electric radiation detectors
  • G01J1/4228 - arrangements with two or more detectors
  • G01T1/26 - with resistance detectors
  • G06G7/24 - for evaluating logarithmic or exponential functions
  • H03G1/0041 - using thermistors
  • H03G1/0047 - using photo-electric elements
  • H03G7/004 - using continuously variable impedance devices

• US Classifications

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