2158902

Information

• Patent Grant
• 2158902

• References
• Source

• Patent Number

  2,158,902

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1939
  85 years ago

• CPC

  • G09F13/36 - co-operating with rotating screening means
  • G09F7/22 - for rotatably or swingably mounting

• US Classifications

  • 359 - Optical: systems and elements
  • 446 - Amusement devices: toys