3629589

Information

• Patent Grant
• 3629589

• References
• Source

• Patent Number

  3,629,589

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1971
  53 years ago

• CPC

  • G01J1/30 - using electric radiation detectors
  • G01N21/255 - Details
  • G01N21/256 - Arrangements using two alternating lights and one detector
  • G01N21/534 - by measuring transmission alone

• US Classifications

  • 250 - Radiant energy
  • 356 - Optics: measuring and testing
  • 359 - Optical: systems and elements