3437822

Information

• Patent Grant
• 3437822

• References
• Source

• Patent Number

  3,437,822

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1969
  55 years ago

• CPC

  • G01N21/255 - Details
  • G01J1/16 - using electric radiation detectors
  • G01J1/30 - using electric radiation detectors
  • G01N21/276 - with alternation of sample and standard in optical path

• US Classifications

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