1224663

Information

• Patent Grant
• 1224663

• References
• Source

• Patent Number

  1,224,663

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1917
  107 years ago

• CPC

  • G03B21/08 - affording epidiascopic projection
  • Y10S353/04 - Opaque

• US Classifications

  • 353 - Optics: image projectors