3821550

Information

• Patent Grant
• 3821550

• References
• Source

• Patent Number

  3,821,550

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  51 years ago

• CPC

  • G01J3/36 - Investigating two or more bands of a spectrum by separate detectors
  • A01B41/06 - with electric
  • B07C5/342 - according to optical properties
  • G01N21/314 - with comparison of measurements at specific and non-specific wavelengths

• US Classifications

  • 250 - Radiant energy