2869369

Information

• Patent Grant
• 2869369

• References
• Source

• Patent Number

  2,869,369

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1959
  65 years ago

• CPC

  • G01J5/08 - Optical features
  • G01J5/0806 - using focussing or collimating elements
  • G01J5/0809 - using plane or convex mirrors, parallel phase plates or particular reflectors
  • G01J5/0859 - using a sighting arrangement, or a camera for the same purpose
  • Y10S246/01 - Radiant energy devices

• US Classifications

  • 374 - Thermal measuring and testing
  • 246 - Railway switches and signals
  • 250 - Radiant energy
  • 359 - Optical: systems and elements