3840294

Information

• Patent Grant
• 3840294

• References
• Source

• Patent Number

  3,840,294

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • G02C5/005 - Glasses allowing access to one eye

• US Classifications

  • 351 - Optics: eye examining, vision testing and correcting