3533687

Information

• Patent Grant
• 3533687

• References
• Source

• Patent Number

  3,533,687

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1970
  54 years ago

• CPC

  • G02C5/2263 - Composite hinges
  • G02C5/229 - Oblique hinge axis

• US Classifications

  • 351 - Optics: eye examining, vision testing and correcting
  • D16 - Photography and optical equipment