3880522

Information

• Patent Grant
• 3880522

• References
• Source

• Patent Number

  3,880,522

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • G01J5/54 - Optical features

• US Classifications

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