2485558

Information

• Patent Grant
• 2485558

• References
• Source

• Patent Number

  2,485,558

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1949
  75 years ago

• CPC

  • G02B23/14 - Viewfinders
  • G01C1/14 - Periscopic sextants

• US Classifications

  • 359 - Optical: systems and elements
  • 033 - Geometrical instruments
  • 356 - Optics: measuring and testing