2404988

Information

• Patent Grant
• 2404988

• References
• Source

• Patent Number

  2,404,988

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1946
  78 years ago

• CPC

  • G09B29/104 - involving the optical projection of slides, microfilm or the like

• US Classifications

  • 353 - Optics: image projectors
  • 040 - Card, picture, or sign exhibiting
  • 242 - Winding, tensioning, or guiding