2144253

Information

• Patent Grant
• 2144253

• References
• Source

• Patent Number

  2,144,253

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1939
  86 years ago

• CPC

  • G09F23/14 - on toys, games, puzzles, or similar devices
  • A63F2250/307 - stereoscopic

• US Classifications

  • 359 - Optical: systems and elements
  • 040 - Card, picture, or sign exhibiting