3671111

Information

• Patent Grant
• 3671111

• References
• Source

• Patent Number

  3,671,111

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • G02C5/2227 - comprising a fixed hinge member and a coil spring
  • G02C2200/28 - Coil spring twisted upon actuation
  • Y10T16/526 - Eyeglass hinge

• US Classifications

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