2046646

Information

• Patent Grant
• 2046646

• References
• Source

• Patent Number

  2,046,646

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1936
  88 years ago

• CPC

  • G01J1/60 - by measuring the pupil of the eye

• US Classifications

  • 356 - Optics: measuring and testing