2457663

Information

• Patent Grant
• 2457663

• References
• Source

• Patent Number

  2,457,663

• Date Filed

  Not available

• Date Issued

  Tuesday, December 28, 1948
  75 years ago

• CPC

  • B61L13/002 - actuated by the passage of the vehicle

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 361 - Electricity: electrical systems and devices