2656617

Information

• Patent Grant
• 2656617

• References
• Source

• Patent Number

  2,656,617

• Date Filed

  Not available

• Date Issued

  Tuesday, October 27, 1953
  71 years ago

• CPC

  • A63F9/183 - electric
  • A63F2003/0069 - using a spring

• US Classifications

  • 434 - Education and demonstration