1904695

Information

• Patent Grant
• 1904695

• References
• Source

• Patent Number

  1,904,695

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1933
  92 years ago

• CPC

  • G03B21/08 - affording epidiascopic projection

• US Classifications

  • 353 - Optics: image projectors