3819187

Information

• Patent Grant
• 3819187

• References
• Source

• Patent Number

  3,819,187

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • A63F9/0078 - Labyrinth games
  • A63F2009/064 - opaque
  • Y10T70/7175 - Labyrinthian passage

• US Classifications

  • 273 - Amusement devices: games
  • 070 - Locks