2717529

Information

• Patent Grant
• 2717529

• References
• Source

• Patent Number

  2,717,529

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1955
  69 years ago

• CPC

  • G03B21/00 - Projectors or projection-type viewers Accessories therefor
  • Y10S353/06 - Head accessories

• US Classifications

  • 351 - Optics: eye examining, vision testing and correcting
  • 353 - Optics: image projectors
  • 434 - Education and demonstration
  • 606 - Surgery