3761723

Information

• Patent Grant
• 3761723

• References
• Source

• Patent Number

  3,761,723

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1973
  51 years ago

• CPC

  • G01N21/8916 - for testing photographic material
  • G01B11/046 - for measuring width
  • G01B11/14 - for measuring distance or clearance between spaced objects or spaced apertures
  • G01N21/8903 - using a multiple detector array

• US Classifications

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