2092247

Information

• Patent Grant
• 2092247

• References
• Source

• Patent Number

  2,092,247

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1937
  87 years ago

• CPC

  • G09F13/32 - with moving optical part of parts

• US Classifications

  • 040 - Card, picture, or sign exhibiting