3468610

Information

• Patent Grant
• 3468610

• References
• Source

• Patent Number

  3,468,610

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1969
  55 years ago

• CPC

  • G01B11/18 - using photoelastic elements
  • G01B11/168 - by means of polarisation
  • G01N21/23 - Bi-refringence
  • G02B27/54 - Schlieren-optical systems

• US Classifications

  • 356 - Optics: measuring and testing