2991959

Information

• Patent Grant
• 2991959

• References
• Source

• Patent Number

  2,991,959

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1961
  63 years ago

• CPC

  • B64F1/08 - using winches

• US Classifications

  • 244 - Aeronautics and astronautics
  • 273 - Amusement devices: games