3722131

Information

• Patent Grant
• 3722131

• References
• Source

• Patent Number

  3,722,131

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • A63H19/34 - Bridges Stations Signalling systems

• US Classifications

  • 446 - Amusement devices: toys