2083287

Information

• Patent Grant
• 2083287

• References
• Source

• Patent Number

  2,083,287

• Date Filed

  Not available

• Date Issued

  Tuesday, June 8, 1937
  87 years ago

• CPC

  • G02C5/143 - having special ear pieces
  • G02C5/16 - resilient or with resilient parts
  • G02C5/20 - adjustable
  • G02C2200/28 - Coil spring twisted upon actuation

• US Classifications

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