1550552

Information

• Patent Grant
• 1550552

• References
• Source

• Patent Number

  1,550,552

• Date Filed

  Not available

• Date Issued

  Tuesday, August 18, 1925
  99 years ago

• CPC

  • A63F9/0807 - requiring vacant positions or gap migration
  • A63F2009/0892 - with an extra element for the final vacant space

• US Classifications

  • 273 - Amusement devices: games
  • 269 - Work holders